Ethiopian Journal of Agricultural Sciences最新文献

{"title":"Agro-Morphological Traits Diversity in Tef [Eragrostis Tef (Zucc.) Trotter] Genotypes from Various Sources","authors":"Habte Jifar, K. Dagne, K. Tesfaye, K. Assefa, Z. Tadele","doi":"10.7892/BORIS.121429","DOIUrl":"https://doi.org/10.7892/BORIS.121429","url":null,"abstract":"አህፅሮት ጤፍ መገኛው በኢትዮጵያ የሆነ ፈርጀ-ብዙ የአመራረት፣ የአመጋገብና የጤና ጠቀሜታ ያለው ሰብል ቢሆንም ምርታማነቱ በተለያዩ ማነቆዎች የተነሳ በሰፊው ከሚመረቱት የብርዕና አገዳ ሰብሎች አንፃር እጅግ ዝቅ ያለ ነው፡፡ ያለንን የጤፍ ዝርያ ብዝሃነት ማጥናት ግን እነኚህን የምርት ማነቆዎች ተቋቁመው የተሻለ ምርት ሊሰጡ የሚችሉ ዝርያዎችን ለመለየት ዕድል ይፈጠራል፡፡ የዚህ ጥናት ዓላማ ከተለያዩ ምንጮች የተገኙ 188 የጤፍ ብዝሃ-ዘሮችን በሆለታና በደብረ ዘይት ምርምር ማዕከል ውስጥ በኮምፕሊቲሊ ረንዶማይዝድ ብሎክ ዲዛይን ዘርቶ በመገምገም ያላቸውን የዝርያ ተለያይነት፣ ብዝሃነትና ስብጥር ምን እንደሚመስል ለማወቅ ነበር፡፡ በዚህ ጥናት መረጃዎችን ለመተንተን የቫሪያንስ፣ የክላስተር እና የፕሪንሲፓል ኮምፖንነት ትንተና ዘዴዎች ሥራ ላይ ውለዋል፡፡ የዚህ ትንተና ውጤት በስብስቦቹ መካከል ከፍተኛ የሆነ የመድረሻ ጊዜ (ፌኖሎጂ)፣ የምርታማነትና የምርት ኮምፖነንት፣ የግሽበት እና የሞርፎሎጂ ባህሪያት ተለያይነት እንዳለ ይጠቁማሉ፡፡ በተጨማሪ የክላስተር ትንተና በጥናቱ ውስጥ የተካተቱ 188 ብዝሃ-ዘሮችን ወደ ስድስት ቦታ ሲመድባቸው፤ 14 ፖፑለሽኖች ደግሞ ወደ አራት ምድብ ከፍሏቿዋል፡፡ እነዚህ ቡድኖች ግን በማህበረሰብ ከቦታ ቦታ ዝውውር የተነሳ የግድ የዘረ-መል ዝምድናንና የአካባቢ ቅርበትን መሰረት ያደረጉ ብቻ ሆነው አልተገኙም፡፡ የዚህ ጥናት ውጤት በአጠቃላይ ወደፊት በጤፍ ምርምር ማሻሻያ ውስጥ ልንጠቀምባቸው የምንችላቸው የብዝሃ-ዘር ተለያይነት እንዳለ ይጠቁማል፡፡ Abstract A total of 188 tef genotypes including 144 pure lines selected from germplasm collection, 35 released varieties, eight breeding lines and their parents were evaluated in three replications at two locations in Ethiopia. The objectives were to assess the magnitude and pattern of phenotypic diversity in tef genotypes obtained from various sources in Ethiopia. Combined analysis of variance revealed highly significant (P < 0.01) differences among genotypes, locations and genotype by environment interaction for all studied traits. Thus, wide ranges of variations were observed for days to heading (40.3 to 60.8 days) and maturity (101 to 122.5 days), plant height (60.7 to 107.1 cm), panicle length (19.5 to 39.5 cm), number of fertile tillers per plant (2.1 to 5.5) and spikelet per panicle (156.7 to 441.7), 1000 kernel weights (20.7 to 33.0 mg), grain yield (3.7 to 7.3 t/ha) and lodging index (44.7 to 79.3%). Cluster analysis revealed six distinct clusters of 188 individual tef genotypes while the 14 populations were grouped into four distinct clusters. In general, existence of sufficient level of genetic variation was revealed for future use in tef improvement.","PeriodicalId":381213,"journal":{"name":"Ethiopian Journal of Agricultural Sciences","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128082063","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}

{"title":"Lead farmers approach in disseminating improved tef production technologies","authors":"A. Bekele, S. Chanyalew, T. Damte, K. Assefa, Z. Tadele","doi":"10.7892/BORIS.94848","DOIUrl":"https://doi.org/10.7892/BORIS.94848","url":null,"abstract":"The study was designed to assess the performance of an improved and recently released tef variety called Kora. Districts selected for the study were Ada, Minjar-Shenkora and Moretna-Jirru. Primary data were collected using a set of validated  interview schedule and testing the tef variety on field plots of ten lead farmers who were randomly selected from forty-five lead farmers. Data analysis was carried out using frequency counts, minimum, maximum, mean, standard deviation and analysis of  variance. The results of the analysis showed that eight of the lead farmers were very satisfied with the new variety. High grain yield was obtained at the 10 on-farm sites due to the introduction of new variety. While the grain yields ranged from 0.7 and 2.9  tons/ha, the mean yield was 2.2 tons/ha. On average, the total variable costs and total revenues of farms per/ha were Birr 18135.90 and Birr 43414.00, respectively. The cost structure analysis revealed that the two highest production costs were labor (56%) and fertilizer (23%). Hence, labor appears to be the most important limiting factor of production in small-scale tef farming.","PeriodicalId":381213,"journal":{"name":"Ethiopian Journal of Agricultural Sciences","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130764959","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}

{"title":"Tef (Eragrostis tef) Variety ‘Tesfa’","authors":"W. Kebede, Kidist Tolossa, Nigussu Hussein, Tsion Genet, A. Bekele, Kidu Gebremeskel, Atinkut Fentahun, Habte Jifar, Sonia Plaza Wüthrich, S. Chanyalew, K. Assefa, Z. Tadele, R. Blösch","doi":"10.7892/BORIS.119211","DOIUrl":"https://doi.org/10.7892/BORIS.119211","url":null,"abstract":"አህፅሮት ጤፍ በኢትዮጵያ ከሚመረቱ የብርዕና አገዳ ሰብሎች ዋናው ሲሆን በ የዓመቱ ቁጥር ከ 6.5 ሚሊዮን የማያንስ አርሶ አደር ያመርተዋል፡፡ ይህም አጠቃላይ በብርዕና አገዳ ሰብሎች ከሚሸፈነው ማሳ 30% ድርሻ አለው፡፡ ይሁን እንጂ ከሌሎች ሰብሎች ጋር ሲነፃፀር ምርታማነቱ አነስተኛ ነው፡፡ ለዚህም ምክንያቱ በከፊል አርሶ አደሩ ያልተሻሻሉ የአካባቢ ዝርያዎችን በመጠቀሙና፣ የሰብሉ ተፈጥሯዊ የመጋሸብ ባህሪ ናቸው፡፡ የዚህ ጥናት ዓላማ በተለየ ምርምር አሰራር የተገኘን የጤፍ ዝርያን በመፈተሸ የተሻለ ምርት፤ የአገዳ ጥንካሬን አንዲሁም የዘር ቀለም ያለውና በአርሶ አደሩ ተመራጭ ዝርያ ማፍለቅ ነበር፡፡ በጥናቱ በቅርቡ የተለቀቀ አንድ ዝርያና አንድ የአካባቢ ዝርያን ጨምሮ 10 የተለያዩ የጤፍ አይነቴዎችን በማካተት በስድስት ወካይ ጤፍ አብቃይ ቦታዎች ላይ ተፈትሸው ተስፋ ( ደዘ - ክሮስ -457) ተብሎ የተሰየመውና የተለያዩ የጤፍ አይነቴዎች ተዳቅለው የተገኘው ዝርያ ከሌሎች ማወዳደሪያ ተፈታሽ ዝርያዎች የተሻለ ውጤት በማስመዝገቡ በብሄራዊ የዝርያ አፅዳቂ ኮሚቴ ተገምግሞ ለምርት እንዲለቀቅ ተወስኗል፡፡ ይህ ዝርያ ከሌሎች ዝርያዎች በንፅፅር መጋሸብን በመቋቋሙ፤ የተሻለ ምርት በመስጠቱ በአርሶአደሩ ተፈላጊ ከመሆኑም በሻገር ከዝርያው ባህሪ የተነሳ ለመስኖ እርሻና በሰብል መድረሻ ጊዜ የማጨጃ የእርሻ መሳሪያ መጠቀም ያስችላል፡፡ Abstract Tef [ Eragrostis tef (Zucc.) Trotter] is extensively cultivated cereal crop in Ethiopia where it is annually grown by about 6.5 million smallholder farmers on about 30% of the total area allocated to cereal crops. However, the productivity of tef is very low compared to other cereals mainly due to lack of high yielding and lodging tolerant cultivars. The objective of this study was to evaluate the performance of the recently released tef variety called Tesfaand to provide unique morphological and agronomic descriptions of this new variety. Ten genotypes which were derived from three independent crosses and bred for at least eight generations plus a local and standard check varieties were tested at six tef growing sites in Ethiopia (namely, Adet, Chafe Donsa,DebreZeit black soil, DebreZeit light soil,Ginchiand Holetta) using RandomizedCompleteBlock Design with three replications. The study found that Tesfa(DZ-Cr-457 RIL-181) which was obtained from a cross between kinde (a semi-dwarf mutant line developed at the University of Bern, Switzerland) and Kay Murri(a landrace) outperformed other genotypes and approved for release by the Ethiopian National Variety Release Committee in March 2017.The main advantages of Tesfa over other tested lines were its higher grain yield and higher lodging tolerance. In addition, Tesfa possesses unique properties for which high acceptance by growers is expected. These are its compact panicle, lack of shattering, and thick and strong culm which makes it potentially cultivated under irrigation and also mechanically harvested.","PeriodicalId":381213,"journal":{"name":"Ethiopian Journal of Agricultural Sciences","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126309287","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}

{"title":"Restriction Site Associated DNA Sequencing based Single Nucleotide Polymorphism Discovery in Selected Tef (Eragrostis tef) and Wild Eragrostis Species","authors":"Dejene Girma, Gina Canarozzi, A. Weichert, Z. Tadele","doi":"10.7892/BORIS.138596","DOIUrl":"https://doi.org/10.7892/BORIS.138596","url":null,"abstract":"አህፅሮት ጤፍ በኢትዮጵያ የተገኘ እና በኢትዮጵያዊያን አርሶአደሮች ለብዙ አመታት ሲመረት የኖረ ዘርፈ ብዙ ጥቅሞች ያሉት የሰብል አይነት ነዉ፡፡ ጤፍ የሚመረተውና ጥቅም ላይ የሚውለው በአብዛኛው በኢትዮጵያ በመሆኑ በአለም አቀፍ ደረጃ ጤፍ ላይ የሚደረጉ ምርምሮች ውሱን ናቸው፡፡  በተለይ የጤፍን ምርምር ለማሳለጥ የተዘጋጁ የሞለኪውላር ሳይንስ ግብአቶች ውሱን በመሆናቸው በሌሎች ሰብሎች ላይ ጥቅም ላይ የዋሉ የዲ ኤን ኤ ሲኩዌንሲንግ ቴክኖሎጂን መሰረት ያደረጉ የምርምር አቅጣጫዎችን መከተል ወሳኝ ነው፡፡  እዚህ በቀረበው  የምርምር ስራ የዲ ኤን ኤ ሲኩዌንሲንግ ቴክኖሎጂን መሰረት ያደረገን የምርምር ስልት በመከተል ከአገሪቱ የተለያዩ አካባቢዎች የተሰበሰቡ አርባ ሁለት የጤፍ ዝርያዎች፡ አንድ ሚውታንት ላይን እና ሁለት ለጤፍ ቅርብ የሆኑ ዋይልድ ሬላቲቭስ ላይ ጥናት ተደርጎ የጤፍን ምርምር በዘመናዊ መልኩ የሚያግዙ ግብአቶች ተገኝተዋል፡፡ Abstract Genome-wide knowledge about the nature and extent of genetic diversity present in tef (Eragrostis tef), the most consumed food grain in Ethiopia is limited. Adopting next generation sequencing (NGS) protocols to enhance its genomics and breeding is essential. Here, we applied the Restriction Site Associated DNA (RAD) sequencing protocol and surveyed the genomes of 43 tef landraces, one mutant line and two wild Eragrostis species. After mapping sequencing reads to the de novo assembled unitag and the tef reference genome, a total of 9,024 and 58,735 high quality single nucleotide polymorphisms (SNPs) were identified, respectively. We identified greater number of SNPs and greater nucleotide diversity in the two wild Eragrostis species than in the tef landraces. The tef landrace populations in this study were poorly differentiated with F ST values of 0.015. In the phylogenetic analysis, grouping of the landraces was not consistent with the area of collection, but few localized grouping of the landraces was evident, probably showing the communality of tef seed use across geographical boundaries. The improved tef varieties show reduced genetic diversity compared to the landraces and were all grouped into one cluster reflecting the nature of tef breeding which largely targets common genomic regions. We suggest that future work needs to aim beyond common genomic regions. The work presented here is a valuable addition to the growing molecular resources developed for tef genetic improvement.","PeriodicalId":381213,"journal":{"name":"Ethiopian Journal of Agricultural Sciences","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129308216","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}

{"title":"Cost-benefit Analysis of New Tef (Eragrostis tef) Varieties under Lead Farmers’ Production Management in the Central Ethiopia","authors":"A. Bekele, S. Chanyalew, T. Damte, N. Husien, Yazachew Genet, K. Assefa, D. Nigussie, Z. Tadele","doi":"10.7892/BORIS.126046","DOIUrl":"https://doi.org/10.7892/BORIS.126046","url":null,"abstract":"አህፅሮት ጤፍ ኢትዮጵያ ውስጥ በሰፊው የሚመረት የምግብ ሰብሌ ሲሆን በየዓመቱ ከሦስት ሚሉዮን ሄክታር የሚበሌጥ መሬት ይሸፈናሌ፡፡ ይህ የመሬት ስፋት ሇብርዕ እና አገዳ ሰብልች በየዓመቱ ከሚውሇው የመሬት ስፋት ውስጥ 30 በመቶ ይሆናሌ፡፡ በቆል እና ስንዴ ከመሳሰለት የብርዕ እና አገዳ ሰብልች ጋር ሲወዳዯር ጤፍ ሕይወት ባሊቸውና ሕይወት በላሊቸው ነገሮች የሚመጡ ተፅዕኖዎችን የበሇጠ የመቋቋም አቅም አሇው፡፡ የጤፍ ማሻሻያ ፕሮግራም ኢትዮጵያ ውስጥ በ1940ቹ ከተጀመረበት ጊዜ ጀምሮ 42 የሚሆኑ የተሻሻለ የጤፍ ዝርያዎች በብሔራዊ የምርምር ሥርዓቱ ተሇቀዋሌ፡፡ ሆኖም ግን ጤፍን ሇማምረት የሚወጣው ወጪ እና የሚገኘው አጠቃሊይ የምጣኔ ሀብት ጠቀሜታ በውሌ ተጠንቶ አያውቅም፡፡ ስሇሆነም ጤፍን ሇማምረት የሚከናወኑ ተግባራትን ከምጣኔ ሀብት ጠቀሜታ አንፃር ሇመገምገም በመካከሇኛው ኢትዮጵያ ባለት አራት ዋና የጤፍ አምራች ወረዳዎች (አዯአ፤ጊምቢቹ፤ሞረትና ጅሩ እና ምንጃር- ሸንኮራ) ውስጥ በሚገኙ 46 ግምባር ቀዯም አርሶ አዯሮችን ያካተተ የመስክ ጥናት ተካሂዷሌ፡፡ በቅርብ ጊዜ የተሇቀቁ ኮራ እና ቦስት የሚባለ የጤፍ ዝርያዎች በጥናቱ ተካተው ተሞክረዋሌ፡፡ ኮራ እና ቦሰትን ሇማምረት የሚያስፈሌገው የሥራ ማስኬጃ ወጪ እንዯቅዯም ተከተሊቸው በአማካይ 19,308.70 እና 18,859.27 ብር በሄክታር ነበር፡፡ ኮራን በማምረት የተገኘው ምርት በሄክታር ከ1,200.00 እስከ 2,500.00 ኪ.ግ ሲሆን አማካይ ምርቱ ዯግሞ 1,963.00 ኪ.ግ. ነበር፡፡ በተመሳሳይ መሌኩ ቦሰትን ሇማምረት የተገኘው ምርት በሄክታር ከ2,000.00 እስከ 2,800.00 ኪ.ግ ሲሆን አማካይ ምርቱ በሄክታር 2,540.00 ኪ.ግ. ነበር፡፡ ኮራ የተዘራው በተስማሚ እና በቂ ዝናብ በሚገኝበት ስነምህዳር ቢሆንም በ2008 ዓ. ም በነበርው ያሇተስተካከሇ ዝናብ ምክንያት ከቦሰት ያነሰ ምርት ሉሰጥ ችሎሌ፡፡ ኮራን በማምረት የተገኘው ትርፍ በሄክታር 22,676.43 ብር ሲሆን ቦስትን በማምርት የተገኘው ትርፍ ዯግም በሄክትር 35,721.12 ብር ነበር፡፡ ጤፍ ሇማምራት ከሚወጣው ጠቅሊሊ ወጪ ውስጥ ከፍተኛው ወጪ የዋሇው ሇሰው ጉሌበት (58%) እና ሇማዳበሪያ (22%) ነበር፡፡ ሇሰው ጉሌበት ከወጣው ወጪ ውስጥ ትሌቁን ድርሻ የወሰዯው የአጨዳ ሥራ (43%) ሲሆን የአረም ሥራ (35%) በሁሇተኛነት ይከተሊሌ፡፡ ሇአጨዳ እና ሇአረም ሥራዎች ወጪ መጨመር በሄክታር የሚወጣው ወጪ እንዯጨምር ከፍተኛ አሰተዋፅኦ ከማድረጋቸውም በሊይ ትርፋማነትንም እንዯሚቀንሱ ጥናቱ አረጋግጧሌ፡፡ ስሇሆነም ሇአጨዳ እና ሇአረም ሥራዎች የሚወጣውን የሰው ጉሌበት ወጪ ሇመቀነስ የሚረደ ቴክኖልጂዎችን ማመንጨት ወይም መፈሇግ ያስፈሌጋሌ፡፡ Abstract Tef [Eragrostis tef (Zucc.) Trotter] is the most important food crop in Ethiopia. It is annually cultivated on over three million hectares of land, which is equivalent to 30% of the total area allocated to cereals in the country. Compared to other cereal crops, such as wheat and maize, tef has higher tolerance to unfavorable environmental conditions, which include both biotic and abiotic stresses. Since the inception of Tef Improvement Program in Ethiopia in the late 1950s, the National Research System has released 42 improved varieties. However, cost of production and economic benefit derived from tef farming was not clearly understood. Thus, a study was carried out in the field plots of 46 lead farmers in four districts (namely, Ada’a, Gimbichu, Moretna-Jirru, and Minjar-Shenkora) where tef is the major cereal crop in order to assess the economics aspects of the tef faming venture. Two recently released tef varieties Kora and Boset were used for the study. On average, the total variable cost of production was 19,308.70 birr ha-1 for Kora and 18,859.27 birr ha-1 for Boset. Although the average grain yield was 1,963.00 kg ha-1 for Kora and 2,540.00 kg ha-1 for Boset, it ranged from 1,200 to 2,500 kg ha-1 for Kora and from 2,000 to 2,800 kg ha-1 for Boset. Kora was sown at appropriate agro-ecologies that receive better rainfall but Boset gave higher yield as a result of climate change and erratic rainfall in 2016. The average profit was 22,676.43 birr ha-1 for Kor","PeriodicalId":381213,"journal":{"name":"Ethiopian Journal of Agricultural Sciences","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134429723","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}

{"title":"In vitro Evaluation of Tef [Eragrostis tef (Zucc) Trotter] Genotypes for Drought Tolerance","authors":"Brikti Ferede, F. Mekbib, K. Assefa, S. Chanyalew, E. Abraha, Z. Tadele","doi":"10.7892/BORIS.133109","DOIUrl":"https://doi.org/10.7892/BORIS.133109","url":null,"abstract":"Abstract Drought is a serious tef production constraint as most of Ethiopia’s agriculture is rain dependent with limited and erratic distribution. The present study was conducted to evaluate tef genotypes for drought tolerance under in vitro condition, and to assess the performance of the in vitro developed regenerants under greenhouse condition. The in vitro experiment was arranged in a factorial experiment using completely randomized design with three replications. Three tef genotypes including Melko (drought tolerant), Gemechis (moderately tolerant) and Pop12S2 (susceptible) and five polyethylene glycol levels (0, 0.5, 1, 1.5 and 2%) were used. Analysis of variance indicated significant differences (P ≤ 0.05) among the genotypes as well as the different polyethylene glycol concentrations for all the measured parameters, but total shoot/culture and survival percentage was not genotype dependent. There was significant genotype by polyethylene glycol interactions on total shoot number/culture, total root number/culture, shoot length, root length and survival percentage, while no significant interaction effect was noted on callus induction efficiency, percent plant regeneration, rooting percentage and number of roots/shoot. The results showed that increasing polyethylene glycol concentration from 0% to 2% in the medium causes a gradual decrease in callus induction and plant regeneration efficiency. In most regenerants, fluctuation behavior was observed for the measured parameters. Hence, to determine the most desirable drought tolerant regenerants, ranking method was taken. Accordingly, regenerant Melko (0.5%), Melko (1.5%), and Melko (1%) gave the most desirable regenerants; thus, they could be used for crossing and further improvement of drought tolerance.","PeriodicalId":381213,"journal":{"name":"Ethiopian Journal of Agricultural Sciences","volume":"23 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113968461","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}