不同条件下印度芥菜基因型热胁迫指标及其与产量的相关性研究

IF 1 4区 生物学 Q3 PLANT SCIENCES Indian Journal of Genetics and Plant Breeding Pub Date : 2022-04-25 DOI:10.31742/ijgpb.82.2.7
Vijay Kamal Meena
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引用次数: 2

摘要

气温升高正成为农业系统面临的主要挑战。芥菜晚播,由于后期的热胁迫,往往导致整体生长下降,代谢不良,生产力和产量下降。在正常环境(Yp)和逆境环境(Ys)下,对45个基因型(包括渐渗系、地方品种、野生品种、诱导突变体、先进育种系和释放品种/栽培品种)的产量稳定性进行了评估。耐热性指数、几何平均生产力、产量稳定性指数、相对稳定性指数和产量评分指数较高,而耐热性指数较低,表明部分基因型耐高温。根据产量表现和衍生性状,6个基因型即零酸品质的HLM-41-13-2和ELM-38,诱导突变体MCN-05-8,种质系PCR-3和CSR-1163,以及MCN-08-2的释放品种RB50在两个地点均被评为耐热潜力品种。双图分析表明,I组和IV组的基因型在逆境环境中具有高产潜力和稳定性,而与位置无关。
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Study on heat stress indices and their correlation with yield in Indian mustard genotypes under diverse conditions
Increasing temperatures are becoming a major challenge for agro-systems. Late mustard planting often results in overall growth reduction, poor metabolism, less productivity and yield due to heat stress at the terminal stage. A set of 45 genotypes comprising introgression lines, landraces, wild species, induced mutants, advance breeding lines and the released varieties/cultivars were evaluated under normal (Yp) and stressed environment (Ys) for yield stability during 2016-2018. The higher value of heat tolerance index, geometric mean productivity, yield stability index, relative stability index and yield production score index with lower heat susceptibility index indicated tolerance to high temperature in some genotypes. Based on the yield performance and derived traits, six genotypes namely, HLM-41-13-2 and ELM-38 with zero erucic acid quality, MCN-05-8 an induced mutant, germplasm lines PCR-3 and CSR-1163, while MCN-08-2 is released variety RB50 were rated as promising for heat stress tolerance at both the locations. Biplot analysis indicated that genotypes under group I and IV are tolerant of high yield potential and stability in a stressed environment irrespective of location.
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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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