Journal of Sugarcane Research最新文献_第4页

VARIATION IN PHYTOLITHS MORPHOLOGY OF ERIANTHUS ARUNDINACEUS 芒花植硅体形态的变化

Journal of Sugarcane Research Pub Date : 2020-12-31 DOI: 10.37580/jsr.2020.2.10.203-210

Jayabose Chellappa, A. Bhaskaran, C. Palaniswami

引用次数: 0

CHARACTERIZATION AND IN SILICO ANALYSES OF RTCS GENE FROM SUGARCANE ENCODING LOB PROTEIN FAMILY OF TRANSCRIPTION FACTORS: A KEY PROSPECTING IN WESTERN GHATS OF KARNATAKA FOR INDIGENOUS BACILLUS THURINGIENSIS ISOLATES HARBOURING NOVEL CRYSTAL TOXIN GENES FOR SUGARCANE PEST MANAGEMENT 编码lob蛋白转录因子家族的甘蔗RTCS基因的鉴定和硅片分析:在卡纳塔克邦西部高山邦寻找含有新型晶体毒素基因的苏云金芽孢杆菌分离株的关键工作

Journal of Sugarcane Research Pub Date : 2020-12-31 DOI: 10.37580/jsr.2020.2.10.113-120

B. Singaravelu, G. S. Suresha, J. Srikanth, C. Appunu, C. Sankaranarayanan, P. Mahesh, R. Nirmala, M. Rajeshkumar

引用次数: 0

CHARACTERIZATION AND IN SILICO ANALYSES OF RTCS GENE FROM SUGARCANE ENCODING LOB PROTEIN FAMILY OF TRANSCRIPTION FACTORS: A KEY REGULATOR OF SHOOT-BORNE ROOT INITIATION 转录因子LOB蛋白家族编码甘蔗RTCS基因的鉴定及计算机分析

Journal of Sugarcane Research Pub Date : 2020-06-30 DOI: 10.37580/jsr.2020.1.10.12-23

R. Valarmathi, H. Mahadevaswamy, K. Preethi, J. Ashwin Narayan, C. Appunu, H. Rahman

{"title":"CHARACTERIZATION AND IN SILICO ANALYSES OF RTCS GENE FROM SUGARCANE ENCODING LOB PROTEIN FAMILY OF TRANSCRIPTION FACTORS: A KEY REGULATOR OF SHOOT-BORNE ROOT INITIATION","authors":"R. Valarmathi, H. Mahadevaswamy, K. Preethi, J. Ashwin Narayan, C. Appunu, H. Rahman","doi":"10.37580/jsr.2020.1.10.12-23","DOIUrl":"https://doi.org/10.37580/jsr.2020.1.10.12-23","url":null,"abstract":"RTCS (Rootless concerning Crown and Seminal roots) is a member of the plant-specific LATERAL ORGAN BOUNDARIES (LOB) domain (LBD) protein family of transcription factors. The RTCS gene has been identified as a key regulator of shoot borne root initiation in maize. In this study an attempt has been made to characterize RTCS from a wild related genus of sugarcane Erianthus arundinaceus and compared to the RTCS gene isolated from commercial sugarcane hybrid genotypes. The candidate gene has been successfully isolated from two genotypes of E. arundinaceus (SES 288 and IND 041335: EaRTCS) and two commercial sugarcane hybrid genotypes (Co 775 and Co 86032: ShRTCS). The isolated RTCS full length gene showed significant variation between EaRTCS and ShRTCS at the DNA and protein level. The RTCS amino acid sequence of all the four genotypes indicated the presence of the characteristic structural features of LBD proteins such as a C-motif, LOB domain sequence and leucine zipper-like dimerization domain. Prediction and analysis of secondary structure of RTCS protein in SES 288 and IND 04-1335 showed the presence of 65% alpha helix, 1% β strand and 38% disorder, while sugarcane commercial genotypes showed 58 % alpha helix, 1% β strand and 47% disorder. Both the sequences of EaRTCS and ShRTCS was found to be closely related to Zea mays RTCS.","PeriodicalId":52656,"journal":{"name":"Journal of Sugarcane Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46435989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

IDENTIFICATION OF EARLY AND MID-LATE MATURING SUGARCANE VARIETIES FOR WESTERN REGION OF TAMIL NADU 塔米尔纳都西部地区早、中晚熟甘蔗品种的鉴定

Journal of Sugarcane Research Pub Date : 2020-06-30 DOI: 10.37580/jsr.2020.1.10.32-42

A. Durai, C. Mahadevaiah, K. Gopinath

{"title":"IDENTIFICATION OF EARLY AND MID-LATE MATURING SUGARCANE VARIETIES FOR WESTERN REGION OF TAMIL NADU","authors":"A. Durai, C. Mahadevaiah, K. Gopinath","doi":"10.37580/jsr.2020.1.10.32-42","DOIUrl":"https://doi.org/10.37580/jsr.2020.1.10.32-42","url":null,"abstract":"Field experiments were conducted during 2016-17 and 2017-18 crop seasons with twenty test clones viz., Co 0238, Co 0240, Co 06031, Co 09004, Co 11015, Co 13001, Co 13003, Co 13006, Co 13014, Co 13018, Co 13020, Co 13021, Co 14008, Co 14016, Co 14026, Co 15005, Co 15007, Co 15021, Co 16001 and Co 16002 along with three standards viz., Co 86032, Co 0212 and Co 06030 at Ponni Sugar Ltd, Odapalley. On the basis of pooled mean of two plant crop trials and a ratoon trial, clones such as Co 09004, Co 11015, Co 16002 and Co 13001 were identified as early high sucrose clones suitable for early crushing. These clones may be used as potential donors in the hybridization programme for transferring extra earliness and high sucrose trait in high yielding commercial varieties. Based on juice quality characteristics at 300 days and 360 days Co 15007 was identified as mid-late maturing clones. The ratoon performance of Co 14016 was excellent. Co 14016 which recorded significantly higher cane yield (184.72 t/ha) and sugar yield (23.17 t/ha) than the standard Co 86032 (134.02 and 17.73 t/ha respectively) may be used as a parental source for crossing with extra early maturing varieties to improve cane yield and ratoon performance. On the basis of the cane yield and sugar yield at harvest, Co 13014 and Co 15007 were found better than Co 86032. Based on the juice quality traits, Co 15005 and Co 15007 were identified as typical mid-late clones. The variety Co 11015 registered 6.79, 7.56 and 7.02 per cent improvement in sucrose % at 240, 300 and 360 DAP, respectively over Co 86032 which is a remarkable improvement in sugarcane. The mean CCS yield (19.27 t/ha) of Co 11015 was at par with that of the standard Co 86032 (20.54). Therefore, large scale cultivation of this extra early high sugar variety Co 11015 in the north-western region of Tamil Nadu is suggested for improving sugar recovery and profit of the farmers.","PeriodicalId":52656,"journal":{"name":"Journal of Sugarcane Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43147102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

STATUS OF LEAF FLECK CAUSED BY SUGARCANE BACILLIFORM VIRUS INCIDENCE AND SEVERITY IN DIFFERENT SUGARCANE GROWING AREAS OF KERALA AND TAMIL NADU 喀拉拉邦和泰米尔纳德邦不同甘蔗产区甘蔗杆菌状病毒引起的叶斑发病及严重程度现状

Journal of Sugarcane Research Pub Date : 2020-06-30 DOI: 10.37580/jsr.2020.1.10.74-86

S. Balan, R. Viswanathan, K. A. Cherian

{"title":"STATUS OF LEAF FLECK CAUSED BY SUGARCANE BACILLIFORM VIRUS INCIDENCE AND SEVERITY IN DIFFERENT SUGARCANE GROWING AREAS OF KERALA AND TAMIL NADU","authors":"S. Balan, R. Viswanathan, K. A. Cherian","doi":"10.37580/jsr.2020.1.10.74-86","DOIUrl":"https://doi.org/10.37580/jsr.2020.1.10.74-86","url":null,"abstract":"Sugarcane bacilliform virus (SCBV), causing leaf fleck in sugarcane (Saccharum spp), is a major threat affecting exchange of germplasm globally. Surveys conducted in four major sugarcane growing districts of Kerala and two in Tamil Nadu during 2018-2019 revealed that the disease incidences ranged between 12 and 51% in Kerala and 28 and 56 % in Tamil Nadu. Symptoms associated with the disease include mild to severe mottling of the leaves, which were more prominent on leaf positions four to six. In Kerala, ratoon crop of the cv. Madhuri in Pathanamthitta district recorded the highest incidence (51%) and severity (36%) of leaf fleck. Least incidence (12%) and severity (10%) were recorded in Idukki district in the cv. Co 86032. Among the surveyed locations in Tamil Nadu, plant crop of cv. CoV 09356 in Villupuram district recorded the maximum percent of disease incidence (56%) and severity (50.41%) followed by Radhapuram with an incidence of 55% and severity of 43.75%. Least incidence and severity were recorded in plant crop of cv. Co 86032 at Kuchipalayam (28%). In comparison to Kerala, Tamil Nadu recorded higher incidences and severities of leaf fleck. PCR assays using primers specific to Badna viruses, confirmed the presence of the virus in collected samples. Detailed surveys conducted for leaf fleck for the first time under field conditions indicated severe occurrence of the disease in the states of Kerala and Tamil Nadu.","PeriodicalId":52656,"journal":{"name":"Journal of Sugarcane Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43934312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

ASSESSMENT OF BREEDING METHODS AND PARENTAL VALUE OF CO CANES DEVELOPED DURING 1918 - 2017 1918 - 2017年间发展的甘蔗育种方法和亲本价值评估

Journal of Sugarcane Research Pub Date : 2020-06-30 DOI: 10.37580/jsr.2020.1.10.24-31

Hemaprabha G, Mohanraj K, Alarmelu S, B. Ram

{"title":"ASSESSMENT OF BREEDING METHODS AND PARENTAL VALUE OF CO CANES DEVELOPED DURING 1918 - 2017","authors":"Hemaprabha G, Mohanraj K, Alarmelu S, B. Ram","doi":"10.37580/jsr.2020.1.10.24-31","DOIUrl":"https://doi.org/10.37580/jsr.2020.1.10.24-31","url":null,"abstract":"The performance of 1454 Co canes developed during 1918 to 2017 spanning one hundred years was assessed for nine contributing characters of cane yield and juice quality to identify the best and poorest Co canes and their parentages examined to assess the relative merit of different breeding methods adopted for their development as well as the parents responsible for their development. The study identified trait specific superior and inferior Co canes as well as Co canes superior for multiple traits. All quality traits and cane yield parameters, other than number of millable canes had a preponderance of recent selections under the best group, indicating that the genetic gain achieved in a century of breeding has been substantial. The biparental crosses accounting to 89.79 % of total Co canes is the best breeding method and highlighted the importance of specific combining ability in sugarcane improvement. On the contrary, only eleven female parents and 17 male parents bred more than 50 % of the best Co canes indicated the relevance of general combining ability, thus demonstrating the importance of both additive and non-additive variances in sugarcane. A fair number of proven parents and crosses for specific traits as well as for simultaneous enhancement of multitraits were identified offering the breeder an option to choose the parental combinations guided by the per se performance as well as their breeding value. The genetic gain achieved is being sustained with the addition of novel parental clones of diverse genetic background.","PeriodicalId":52656,"journal":{"name":"Journal of Sugarcane Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48522643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Isolation, characterization and expression analysis of novel water deficit stress-responsive DEEPER ROOTING 1 (DRO1) gene from drought-tolerant Erianthus arundinaceus 耐旱性Erianthus arundinaceus中新的水分亏缺胁迫响应基因deep生根1 (DRO1)的分离、表征和表达分析

Journal of Sugarcane Research Pub Date : 2020-06-30 DOI: 10.37580/jsr.2020.1.10.1-11

P. Swathik Clarancia, M. Naveenarani, R. Valarmathi, G. Suresha, G. Hemaprabha, B. Ram, C. Appunu

{"title":"Isolation, characterization and expression analysis of novel water deficit stress-responsive DEEPER ROOTING 1 (DRO1) gene from drought-tolerant Erianthus arundinaceus","authors":"P. Swathik Clarancia, M. Naveenarani, R. Valarmathi, G. Suresha, G. Hemaprabha, B. Ram, C. Appunu","doi":"10.37580/jsr.2020.1.10.1-11","DOIUrl":"https://doi.org/10.37580/jsr.2020.1.10.1-11","url":null,"abstract":"Sugarcane ( Saccharum spp.) is an important food, fodder and energy crop in India. Its production and productivity are mainly constrained due to water deficit stress during different growth stages. Of the root system architecture traits, deep rooting helps plants to avoid drought-induced stress by foraging moisture from deeper layers of soil. Hence, in this study, a novel drought-responsive DEEPER ROOTING 1 ( DRO1 ) gene cloned from drought-tolerant Erianthus arundinaceus was characterized. The open reading frame of this gene is 765 bp that encodes for a single polypeptide of 254 amino acids. In silico analysis of DRO1 protein using bioinformatics tools revealed its size of 28.91 kDa with theoretical pI 5.39, instability index 67.57, aliphatic index 69.92 and GRAVY of -0.86. Subcellular localization by LocTree3 tool suggested that DRO1 protein expression is localized in the nucleus. The phylogenetic tree exhibited that DRO1 from Erianthus arundinaceus is closely associated with that of Sorghum bicolor and Triticum aestivum. Protein interaction network analysis showed DRO1 association with WOX11, which promotes the development of crown roots and ARL1 (Adventitious rootless1) required for adventitious root formation. Quantitative gene expression analysis indicated that the DRO1 gene is differentially upregulated in root tissue of E. arundinaceus and Saccharum spp. commercial hybrid under water deficit stress conditions. EaDRO1 gene can be a novel source for developing drought stress tolerant genotypes through genetic engineering approach.","PeriodicalId":52656,"journal":{"name":"Journal of Sugarcane Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42335407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

EVALUATION OF INTRA-SPECIFIC HYBRIDS OF SACCHARUM OFFICINARUM FOR YIELD, QUALITY AND INCIDENCE OF YELLOW LEAF DISEASE 药用糖精种内杂交种对产量、品质和黄叶病发病率的评价

Journal of Sugarcane Research Pub Date : 2020-06-30 DOI: 10.37580/jsr.2020.1.10.54-62

R. Karuppaiyan, N. Nair, B. Ram, K. Mohanraj, A. Anna Durai, P. Amudha

{"title":"EVALUATION OF INTRA-SPECIFIC HYBRIDS OF SACCHARUM OFFICINARUM FOR YIELD, QUALITY AND INCIDENCE OF YELLOW LEAF DISEASE","authors":"R. Karuppaiyan, N. Nair, B. Ram, K. Mohanraj, A. Anna Durai, P. Amudha","doi":"10.37580/jsr.2020.1.10.54-62","DOIUrl":"https://doi.org/10.37580/jsr.2020.1.10.54-62","url":null,"abstract":"Improvement of parental clones of Saccharum officinarum L. through repeated cycles of intra-specific hybridization and selection was undertaken at ICAR-Sugarcane Breeding Institute (SBI), Coimbatore during 1987 to 1996. Thirty one clones selected from six polycrosses involving 13 parental clones of S. officinarum constituted cycle 1 (C1) population. Intermating among fourteen C1 clones followed by selection resulted in identification of 33 clones in cycle 2 (C2) population. Fourteen clones selected in C2 and C1 were inter-crossed. From the progenies, 50 clones were selected to constitute cycle 3 (C3) population. As the original parental clones of S. officinarum had low number of millable canes (NMC) and poor cane yield, in each cycle of selection emphasis was given to select progenies with high NMC, single cane weight and cane yield. The C1, C2 and C3 population, totalling 114 (designated as population-improved S. officinarum clones or PIO clones) were evaluated at ICAR-SBI Research Centre, Agali during 2015-16 and 2016-17 for NMC, single cane weight, cane yield per plot, brix%, sucrose% in juice and resistance to yellow leaf disease (YLD). Generation-wise improvement in the targeted traits was estimated. Significant improvement in NMC /ha (37.18 per cent), single cane weight (16.67 per cent) and cane yield (61.51 per cent) was achieved in two cycles of selection. Ten YLD-free improved clones with acceptable agronomic traits were identified for further use. They are: PIO 94-847, PIO 94-875, PIO 99-633, PIO 00-513, PIO 00-547, PIO 00-638, PIO 00-757, PIO 00-769, PIO 00-772 and PIO 00-840. These improved PIO clones would serve as new parental gene pool in the interspecific hybridization programmes and for diversifying the genetic base of commercial sugarcane varieties.","PeriodicalId":52656,"journal":{"name":"Journal of Sugarcane Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46893635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

COLK 12209 (IKSHU-7): A NEW MID-LATE MATURING SUGARCANE VARIETY FOR NORTH CENTRAL AND NORTH EAST ZONE OF SUB-TROPICAL INDIA Colk 12209 (ikshu-7):中晚熟甘蔗新品种，适用于亚热带印度中北部和东北部地区

Journal of Sugarcane Research Pub Date : 2020-06-30 DOI: 10.37580/jsr.2020.1.10.43-53

M. Swapna, R. Kapur, Sanjeev Kumar, Devender Kumar, J. Singh, P. Singh, D. Pandey, T. Srivastava, D. Singh, A. D. Pathak

{"title":"COLK 12209 (IKSHU-7): A NEW MID-LATE MATURING SUGARCANE VARIETY FOR NORTH CENTRAL AND NORTH EAST ZONE OF SUB-TROPICAL INDIA","authors":"M. Swapna, R. Kapur, Sanjeev Kumar, Devender Kumar, J. Singh, P. Singh, D. Pandey, T. Srivastava, D. Singh, A. D. Pathak","doi":"10.37580/jsr.2020.1.10.43-53","DOIUrl":"https://doi.org/10.37580/jsr.2020.1.10.43-53","url":null,"abstract":"Sugarcane improvement programmes in India have concentrated on development of improved varieties suited to the different locations. Along with the early maturing sugarcane varieties, mid-late maturing varieties facilitate a proper varietal planning for efficient and extended functioning of sugar mills. ICAR-Indian Institute of Sugarcane Research, Lucknow has developed a mid-late maturing variety CoLk 12209 (Ikshu-7) for commercial cultivation in sugarcane growing states in the north central and north east zone. CoLk 12209 was tested in 6 locations in this zone along with three other test entries and was compared with the standard varieties viz., BO 91 and CoP 9301. The variety gave the best performance among all the genotypes tested, with an improvement of 15.5% and 16.28 % in CCS yield and cane yield respectively, over the standard variety BO 91. This variety exhibited ‘Resistant’ to ‘Moderately Resistant’ reactions against the major diseases and is ‘Least Susceptible’ to the major insect pests. Ikshu-7 was identified for notification by the Varietal Release Committee of AICRP (Sugarcane) held at Bangalore during October 2018 and was notified for release in the zone, vide Gazette notification No. S.O.1498 (E) dated the 1st April 2019.","PeriodicalId":52656,"journal":{"name":"Journal of Sugarcane Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44045493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

STUDIES ON ECONOMIC TRAITS IN SUCCESSIVE GENERATIONS OF SELFING IN SUGARCANE (SACCHARUM SPP.) 甘蔗自交后代经济性状的研究

Journal of Sugarcane Research Pub Date : 2019-12-31 DOI: 10.37580/jsr.2019.2.9.119-129

A. Durai, G. Hemaprabha, V. R. Viola, T. S. S. Padmanaban, K. Lakshmi

{"title":"STUDIES ON ECONOMIC TRAITS IN SUCCESSIVE GENERATIONS OF SELFING IN SUGARCANE (SACCHARUM SPP.)","authors":"A. Durai, G. Hemaprabha, V. R. Viola, T. S. S. Padmanaban, K. Lakshmi","doi":"10.37580/jsr.2019.2.9.119-129","DOIUrl":"https://doi.org/10.37580/jsr.2019.2.9.119-129","url":null,"abstract":"Selfing is one of the classical methods with demonstrated merits to understand parental worthiness, achieving homozygosity and for removing the deleterious genes from the genome. The selfed progenies of S1, S2 and S3 generation of sugarcane clones viz., Co 775, Co 99008, Co 0304, Co 2000-10, Co 0112 and MS 68/47 and S6 and S7 progenies of Co 1148 were studied for homozygosity in successive generations of selfing, level of inbreeding depression and transgressive segregation for important economic traits. A narrow level of variation for HR Brix and wide variation for number of millable canes and moderate level of variation for cane thickness was observed in S1, S2 and S3 generations. The genotypes with least variation among the selfed progenies in preceding generation of selfing did not show the same response in succeeding generations of selfing indicating that the genotypes behave differently in successive generations of selfing during the process of attaining homozygosity. The inbreeding individuals of 1148-13-11-2-237 and 1148-S4-247 depicted the least variation for the traits studied in later generations of selfing. Some of the inbreeding individuals from early generation of selfing of Co 775, MS 68/47, and Co 0112 for number of millable canes, Co 99008, MS 68/47 and Co 0112 for HR Brix and MS 68/47, Co 0112 for cane thickness surpassed their respective parents in their performance. HR Brix was the only trait which was least affected by inbreeding depression and greater level of inbreeding depression was observed for cane thickness. Though inbreeding was observed in early generation of selfing for number of millable canes, no inbreeding depression was observed for the trait in succeeding generations of selfing. Inbreds with higher level of homozygosity in the later generation of selfings viz., S6-2-59 and S6-2-60, S6-2-63 and S6-2-73 and S6-2-66 and S6-2-69 of Co 1148 developed in this study may be utilized for hybrid seed production in sugarcane.","PeriodicalId":52656,"journal":{"name":"Journal of Sugarcane Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44213708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2