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

Sustainability

SobhyGharib Rizk Sorour¹  Ayman EL Sabagh¹  MohamedKhamees Aly Shabaan¹  Muhammad Ishaq Asif Rehmani²  Mohamed El-Sharnouby³  Tahir Mahmood⁴  MuhammadShahid Iqbal⁴  MianFaisal Nazir⁴  Talat Mahmood⁴  MuhammadKausar Nawaz Shah⁴  Naimatullah Mangi⁵  Zareen Sarfraz⁵ 

[1] Department of Agronomy, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh 33156, Egypt;Department of Agronomy, Ghazi University, Dera Ghazi Khan 32200, Pakistan;Department of Biotechnology, College of Science, Taif University, Taif 21944, Saudi Arabia;Department of Plant Breeding and Genetics, PMAS Arid Agriculture University, Rawalpindi 46000, Pakistan;State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China;

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

DOI  :  10.3390/su13115940

来源: DOAJ

【 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 × LLR22, Nacozari × LLR 20, Nacozari × Parula, Nacozari × LLR 21, LLR 22 × LLR 21, and LLR 20 × 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.

【 授权许可】

Unknown