Studies on effects of terminal heat stress on yield stability, grain iron and zinc contents in wheat (Triticum aestivum L.)

IF 1 4区生物学 Q3 PLANT SCIENCES Indian Journal of Genetics and Plant Breeding Pub Date : 2022-09-30 DOI:10.31742/isgpb.82.3.3

Sourav Panigrahi, Yaswant Kumar Pankaj, V. Kumar, Raj Kumar, Santoshkumar Singh

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引用次数: 2

Abstract

Considering global warming as a major constraint of yield and quality, the present study accessed the impact of terminal heat stress on wheat yield stability and grain Fe and Zn content in wheat. Twenty-three wheat genotypes of CGIAR Research Program (CRP) and two check varieties, PBW343 and HD2967 were evaluated for grain yield stability and the Fe and Zn content under heat stress conditions at terminal stage. Stability measures indicated CRP7, CRP8, CRP33, CRP46, and CRP48 to be the most stable genotypes. Grain iron (Fe) and zinc (Zn) content showed a high degree of variation. Under normal sown conditions the Fe content varied from 20.47 ppm (HD2967) to 76.07 ppm (CRP7) while the Zn content varied from 25.17 ppm (HD2967) to 65.6 ppm (CRP48). Under the stress, variation in the Fe content was observed from 10.17 ppm (PBW343) to 43.93 ppm (CRP54) whereas the Zn content variation ranged from 20.33 ppm (CRP30) to 55.13 ppm (CRP48). The overall average content of Fe was reduced by 31.98 % and Zn by 5.91% under the heat stress indicating grain Fe content to be highly vulnerable to the terminal heat stress than the Zn content.

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终末热胁迫对小麦产量稳定性及籽粒铁锌含量影响的研究

考虑到全球变暖是小麦产量和品质的主要制约因素，本研究探讨了终末热胁迫对小麦产量稳定性和籽粒铁、锌含量的影响。对CGIAR研究计划（CRP）的23个小麦基因型和两个对照品种PBW343和HD2967在后期热胁迫条件下的籽粒产量稳定性和铁、锌含量进行了评价。稳定性测定表明，CRP7、CRP8、CRP33、CRP46和CRP48是最稳定的基因型。晶粒铁（Fe）和锌（Zn）含量表现出高度的变化。在正常播种条件下，Fe含量在20.47ppm（HD2967）到76.07ppm（CRP7）之间变化，而Zn含量在25.17ppm（HD2967）和65.6ppm（CRP48）之间变化。在胁迫下，观察到Fe含量在10.17ppm（PBW343）至43.93ppm（CRP54）之间变化，而Zn含量在20.33ppm（CRP30）至55.13ppm（CRP48）之间变化。在热应力下，Fe和Zn的总体平均含量分别降低了31.98%和5.91%，表明晶粒Fe含量比Zn含量更容易受到末端热应力的影响。

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来源期刊

Indian Journal of Genetics and Plant Breeding PLANT SCIENCES-

CiteScore

1.80

自引率

10.00%

发文量

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.