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

Mian Faisal Nazir, Zareen Sarfraz, Naimatullah Mangi, Muhammad Kausar Nawaz Shah, Talat Mahmood, Tahir Mahmood, Muhammad Shahid Iqbal, Muhammad Ishaq Asif Rehmani, Mohamed El-Sharnouby, Mohamed Khamees Aly Shabaan, Sobhy Gharib Rizk Sorour and Ayman EL Sabagh
Additional contact information
Mian Faisal Nazir: Department of Plant Breeding and Genetics, PMAS Arid Agriculture University, Rawalpindi 46000, Pakistan
Zareen Sarfraz: State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
Naimatullah Mangi: State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
Muhammad Kausar Nawaz Shah: Department of Plant Breeding and Genetics, PMAS Arid Agriculture University, Rawalpindi 46000, Pakistan
Talat Mahmood: Department of Plant Breeding and Genetics, PMAS Arid Agriculture University, Rawalpindi 46000, Pakistan
Tahir Mahmood: Department of Plant Breeding and Genetics, PMAS Arid Agriculture University, Rawalpindi 46000, Pakistan
Muhammad Shahid Iqbal: Department of Plant Breeding and Genetics, PMAS Arid Agriculture University, Rawalpindi 46000, Pakistan
Muhammad Ishaq Asif Rehmani: Department of Agronomy, Ghazi University, Dera Ghazi Khan 32200, Pakistan
Mohamed El-Sharnouby: Department of Biotechnology, College of Science, Taif University, Taif 21944, Saudi Arabia
Mohamed Khamees Aly Shabaan: Department of Agronomy, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh 33156, Egypt
Sobhy Gharib Rizk Sorour: Department of Agronomy, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh 33156, Egypt
Ayman EL Sabagh: Department of Agronomy, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh 33156, Egypt

Sustainability, 2021, vol. 13, issue 11, 1-10

Abstract: 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.

Keywords: stem reserves; photosynthetic assimilates; abiotic stress; combining ability; translocation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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