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

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 

机构地区：[1]Federal Seed Certification and Registration Department,Ministry of National Food Security and Research,Islamabad 44090,Pakistan [2]Horticultural Research Institute,National Agricultural Research Centre,Islamabad 44000,Pakistan [3]Department of Biotechnology,University of Narowal,Narowal 51600,Pakistan [4]Centre of Agricultural Biochemistry and Biotechnology,University of Agriculture,Faisalabad 38400,Pakistan [5]Department of Plant Breeding and Genetics,University of Agriculture Faisalabad,Sub-Campus Burewala,Vehari,Pakistan [6]Faculty of Science,School of Life and Environ-mental Sciences,Plant Breeding Institute,Sydney Institute of Agriculture,The University of Sydney,Sydney,NSW 2006,Australia [7]State Key Laboratory of Cotton Biology,Institute of Cotton Research of Chinese Academy of Agri-cultural Science,Anyang 455000,China [8]Agricultural Research Service,USDA,Southern Plains Agricultural Research Centre,College Station,TX 77845,USA [9]Department of Plant Breeding and Genetics,University of Agriculture,Faisal-abad 38400,Pakistan [10]School of Agriculture Sciences,Zhengzhou University,Zhengzhou 450000,China.

出　　处：《Journal of Cotton Research》2024年第1期29-44,共16页棉花研究（英文）

基　　金：Centre for Advance Studies in Agricultural Food Security and Punjab Agricultural Research Board for providing funds under CAS-PARB project(No.964).

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 fr

关 键 词：ACCESSIONS BIOCHEMICAL BREEDING Cotton Generation mean analysis Heat stress 

分 类 号：S562[农业科学—作物学]