Post-Anthesis Mobilization of Stem Assimilates in Wheat under Induced Stress

文献类型： 外文期刊

第一作者： Nazir, Mian Faisal

作者： Nazir, Mian Faisal;Nawaz Shah, Muhammad Kausar;Mahmood, Talat;Mahmood, Tahir;Iqbal, Muhammad Shahid;Sarfraz, Zareen;Mangi, Naimatullah;Ishaq Asif Rehmani, Muhammad;El-Sharnouby, Mohamed;Shabaan, Mohamed Khamees Aly;Sorour, Sobhy Gharib Rizk;EL Sabagh, Ayman

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关键词： stem reserves; photosynthetic assimilates; abiotic stress; combining ability; translocation

期刊名称：SUSTAINABILITY （ 影响因子：3.251； 五年影响因子：3.473 ）

ISSN：

年卷期： 2021 年 13 卷 11 期

页码：

收录情况： SCI

摘要： Stem reserves in grain crops are considered important in grain filling under post-anthesis stress in the absence/low availability of photosynthetic assimilates. Considerable variation is present among genotypes for stem reserve translocation in wheat. Therefore, this study aimed to exploit the phenotypic variation for stem reserve translocation in wheat under control and chemically induced stress conditions. The phenotypic variation among six parents and their corresponding direct cross combinations was evaluated under induced stress conditions. The results signify the presence of considerable variation between treatments, genotypes, and treatment-genotype interactions. The parent LLR-20 depicted the highest translocation of dry matter and contribution of post-anthesis assimilates under induced-stress conditions. Similarly, cross combinations Nacozari x LLR22, Nacozari x LLR 20, Nacozari x Parula, Nacozari x LLR 21, LLR 22 x LLR 21, and LLR 20 x LLR 21 showed higher source-sink accumulation under induced-stress conditions. The selected parents and cross combinations can be further utilized in the breeding program to strengthen the genetic basis for stress tolerance in wheat.

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