Genetics of biochemical attributes regulating morpho-physiology of upland cotton under high temperature conditions

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外文摘要：Background Cotton is a strategically important fibre crop for global textile industry.It profoundly impacts several countries'industrial and agricultural sectors.Sustainable cotton production is continuously threatened by the unpre-dictable changes in climate,specifically high temperatures.Breeding heat-tolerant,high-yielding cotton cultivars with wide adaptability to be grown in the regions with rising temperatures is one of the primary objectives of modern cotton breeding programmes.Therefore,the main objective of the current study is to figure out the effective breed-ing approach to imparting heat tolerance as well as the judicious utilization of commercially significant and stress-tolerant attributes in cotton breeding.Initially,the two most notable heat-susceptible(FH-115 and NIAB Kiran)and tolerant(IUB-13 and GH-Mubarak)cotton cultivars were spotted to develop filial and backcross populations to accom-plish the preceding study objectives.The heat tolerant cultivars were screened on the basis of various morphological(seed cotton yield per plant,ginning turnout percentage),physiological(pollen viability,cell membrane thermostabil-ity)and biochemical(peroxidase activity,proline content,hydrogen peroxide content)parameters.Results The results clearly exhibited that heat stress consequently had a detrimental impact on every studied plant trait,as revealed by the ability of crossing and their backcross populations to tolerate high temperatures.However,when considering overall yield,biochemical,and physiological traits,the IUB-13 × FH-115 cross went over particularly well at both normal and high temperature conditions.Moreover,overall seed cotton yield per plant exhibited a posi-tive correlation with both pollen viability and antioxidant levels(POD activity and proline content).Conclusions Selection from segregation population and criteria involving pollen viability and antioxidant levels concluded to be an effective strategy for the screening of heat-tolerant cotton germplasms.Therefore,understanding acquired from this study can assist breeders identifying traits that should be prioritized in order to develop climate resilient cotton cultivars.

外文关键词：

AccessionsBiochemicalBreedingCottonGeneration mean analysisHeat stress

作者：

MAJEED Sajid、CHAUDHARY Muhammad Tanees、MUBARIK Muhammad Salman、RANA Iqrar Ahmad、SHABAN Muhammad、TAN Daniel KY、JIA Yinhua、DU Xiongming、HINZE Lori、AZHAR Muhammad Tehseen

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作者单位：

Federal Seed Certification and Registration Department,Ministry of National Food Security and Research,Islamabad 44090,Pakistan

Horticultural Research Institute,National Agricultural Research Centre,Islamabad 44000,Pakistan

Department of Biotechnology,University of Narowal,Nrowal 51600,Pakistan

Centre of Agricultural Biochemistry and Biotechnology,University of Agriculture,Faisalabad 38400,Pakistan

Department of Plant Breeding and Genetics,University of Agriculture Faisalabad,SubCampus Burewala,Vehari,Pakistan

Faculty of Science,School of Life and Environmental Sciences,Plant Breeding Institute,Sydney Institute of Agriculture,The University of Sydney,Sydney,NSW 2006,Australia

State Key Laboratory of Cotton Biology,Institute of Cotton Research of Chinese Academy of Agricultural Science,Anyang 455000,China

Agricultural Research Service,USDA,Southern Plains Agricultural Research Centre,College Station,TX 77845,USA

Department of Plant Breeding and Genetics,University of Agriculture,Faisalabad 38400,Pakistan

School of Agriculture Sciences,Zhengzhou University,Zhengzhou 450000,China

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出版年：

2024

DOI：

10.1186/s42397-023-00164-9

棉花研究(英文)

中国农业科学院棉花研究所,中国农学会

棉花研究(英文)

ISSN：2096-5044

年,卷(期)：2024.7(4)