利用多元技术解译热带气候条件下天然糖的耐旱潜力

IF 2 3区 农林科学 Q2 AGRONOMY
V. Vinu, T. Lakshmi Pathy, H. K. Mahadeva Swamy, Gopalareddy Krishnappa, R. Arun Kumar, R. Valarmathi, R. Gobu, V. Sreenivasa, R. T. Maruthi,  Amaresh, P. Govindaraj
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引用次数: 0

摘要

甘蔗的野生祖先——天然糖(Saccharum spontanum)是抵抗生物和非生物胁迫的重要基因来源,尤其是对水分胁迫的耐受性。为评价天然糖(Saccharum spontanum)的抗旱潜力,在4种环境下对40份材料进行了对照和干旱处理下的4个干旱相关性状,即每穗鲜生物量(FBM)、每穗干生物量(DBM)、每穗分蘖数(TILL)和茎高(SH)进行了评价。各性状值均显著降低,方差分析显示各品种间的抗逆性差异显著,对照和干旱性状差异显著。在4个性状的5个抗旱性计算指标中,抗旱性系数(DC)与几何平均生产力(GMP)不相关,并基于每个性状和各性状间抗旱性隶属函数值(MFVD)的综合指标筛选有希望的基因型。综合环境因素和多因素分析,认为IND 04-1372、IND 99-847、IND 99-850、IND 99-984和IND 03-1307具有较强的耐旱性,可作为通过种间杂交形成性状特异性遗传库的潜在亲本。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Deciphering Drought Tolerance Potential of Saccharum spontaneum in Tropical Climates Using Multivariate Techniques

Saccharum spontaneum, a wild progenitor of sugarcane, serves as a vital source of genes for resistance to biotic and abiotic stresses, particularly tolerance to water stress. To assess the drought tolerance potential of Saccharum spontaneum, 40 accessions along with two checks were evaluated in four environments for four drought-related traits, namely fresh biomass per clump (FBM), dry biomass per clump (DBM), tiller number per clump (TILL), and stalk height (SH) under control and drought treatments. Significant reductions in trait values were observed in each of these traits, and analysis of variance revealed significant differences among the accessions for stress tolerance and differential performance of accessions in control and drought. Among five computed stress tolerance indices for four traits, drought tolerance coefficient (DC) and geometric mean productivity (GMP) were uncorrelated, and promising genotypes were selected based on an integrated comprehensive index termed as membership function value for drought tolerance (MFVD) for each trait and across the traits. Considering environment-wise and pooled multivariate analyses, accessions IND 04–1372, IND 99–847, IND 99–850, IND 99–984, and IND 03–1307 were considered to be tolerant to drought and could serve as potential parents for trait introgression through developing trait-specific genetic stocks via interspecific hybridization.

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来源期刊
Sugar Tech
Sugar Tech AGRONOMY-
CiteScore
3.90
自引率
21.10%
发文量
145
期刊介绍: The journal Sugar Tech is planned with every aim and objectives to provide a high-profile and updated research publications, comments and reviews on the most innovative, original and rigorous development in agriculture technologies for better crop improvement and production of sugar crops (sugarcane, sugar beet, sweet sorghum, Stevia, palm sugar, etc), sugar processing, bioethanol production, bioenergy, value addition and by-products. Inter-disciplinary studies of fundamental problems on the subjects are also given high priority. Thus, in addition to its full length and short papers on original research, the journal also covers regular feature articles, reviews, comments, scientific correspondence, etc.
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