耐低磷干旱复合胁迫绿豆光合作用和产量性状的多元分析

IF 1 4区 生物学 Q3 PLANT SCIENCES Indian Journal of Genetics and Plant Breeding Pub Date : 2020-09-22 DOI:10.31742/IJGPB.80.3.8
R. Pandey, S. Meena, Gayacharan, Madanpal Singh
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引用次数: 3

摘要

研究了14份绿豆(Vigna radiata(L.)R.Wilczek)材料对低磷有效性和干旱联合胁迫耐受性的基因型变异。在四个条件下对材料进行了评价,即对照(充足磷,灌溉)、低磷(无磷,浇灌)、干旱(充足磷、截留灌溉)和联合胁迫(低磷,截留灌溉)。对22个农业生理性状的相对抗逆性进行了估算。性状的主成分分析(PCA)和相对应力指数(RSI)在不同处理和材料之间表现出显著的差异。基于RSIs,PCA排序分析表明,材料IC 280489、PDM 139和IC 76491具有较高的排序,对低磷、干旱和复合胁迫具有耐受性。抗性材料的光合参数、相对含水量、地上生物量、种子磷含量和荚株数等组成性状的相对增加较高,而冠层温度和水分利用效率降低。相反,发现IPM2-3对所有三种处理都相对敏感。耐受材料可以被纳入育种计划,也可以直接用作在低磷和干旱条件下生长的品种。
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Photosynthetic and yield traits identified through multivariate analysis in mungbean exhibiting tolerance to the combined stresses of low phosphorus and drought
Experiments were conducted to study the genotypic variability for tolerance to combined stresses of low availability of phosphorus (P) and drought in 14 mungbean [Vigna radiata (L.) R. Wilczek] accessions. The accessions were evaluated under four conditions viz., control (sufficient P, irrigated), low P (without P, irrigated), drought (sufficient P, withholding irrigation) and combined stresses (low P, withholding irrigation). The relative stress tolerance was estimated for 22 agro-physiological traits. The principal component analysis (PCA) and relative stress indices (RSIs) of traits exhibited significant variation among the treatments and accessions. Based on RSIs, the PCA ranking analysis showed that the accessions IC 280489, PDM 139 and IC 76491 were highly ranked and tolerant to low P, drought and combined stresses. The relative increase in component traits such as photosynthetic parameters, relative water content, above-ground biomass, seed P content and number of pods plant–1 were higher while canopy temperature and water use efficiency were reduced in tolerant accessions. In contrast, IPM 2-3 was found to be relatively sensitive to all three treatments. Tolerant accessions may be either included in the breeding program or used directly as cultivar that can be grown under low P and drought.
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来源期刊
CiteScore
1.80
自引率
10.00%
发文量
0
审稿时长
6-12 weeks
期刊介绍: Advance the cause of genetics and plant breeding and to encourage and promote study and research in these disciplines in the service of agriculture; to disseminate the knowledge of genetics and plant breeding; provide facilities for association and conference among students of genetics and plant breeding and for encouragement of close relationship between them and those in the related sciences; advocate policies in the interest of the nation in the field of genetics and plant breeding, and facilitate international cooperation in the field of genetics and plant breeding.
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