Agronomic and physiological indices for reproductive stage heat stress tolerance in green super rice

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dc.creatorZafar, Syed Adeel
dc.creatorArif, Muhammad Hamza
dc.creatorUzair, Muhammad
dc.creatorRashid, Umer
dc.creatorNaeem, Muhammad Kashif
dc.creatorRehman, Obaid Ur
dc.creatorRehman, Nazia
dc.creatorZaid, Imdad Ullah
dc.creatorFarooq, Muhammad Shahbaz
dc.creatorZahra, Nageen
dc.creatorSaleem, Bilal
dc.creatorXu, Jianlong
dc.creatorLi, Zhikang
dc.creatorAli, Jauhar
dc.creatorAli, Ghulam Muhammad
dc.creatorYang, Seung Hwan
dc.creatorKhan, Muhammad Ramzan
dc.date2022-08-14
dc.date2023-01-05T10:50:45Z
dc.date2023-01-05T10:50:45Z
dc.date.accessioned2026-06-27T04:08:49Z
dc.descriptionOptimum growing temperature is necessary for maximum yield-potential in any crop. The global atmospheric temperature is changing more rapidly and irregularly every year. High temperature at the flowering/reproductive stage in rice causes partial to complete pollen sterility, resulting in significant reduction in grain yield. Green Super Rice (GSR) is an effort to develop an elite rice type that can withstand multiple environmental stresses and maintain yield in different agro-ecological zones. The current study was performed to assess the effect of heat stress on agronomic and physiological attributes of GSR at flowering stage. Twenty-two GSR lines and four local checks were evaluated under normal and heat-stress conditions for different agro-physiological parameters, including plant height (PH), tillers per plant (TPP), grain yield per plant (GY), straw yield per plant (SY), harvest index (HI), 1000-grain weight (GW), grain length (GL), cell membrane stability (CMS), normalized difference vegetative index (NDVI), and pollen fertility percentage (PFP). Genotypes showed high significant variations for all the studied parameters except NDVI. Association and principal component analysis (PCA) explained the genetic diversity of the genotypes, and relationship between the particular parameters and grain yield. We found that GY, along with other agronomic traits, such as TPP, SY, HI, and CMS, were greatly affected by heat stress in most of the genotypes, while PH, GW, GL, PFP, and NDVI were affected only in a few genotypes. Outperforming NGSR-16 and NGSR-18 in heat stress could be utilized as a parent for the development of heat-tolerant rice. Moreover, these findings will be helpful in the prevention and management of heat stress in rice.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/126609
dc.identifier.urihttp://hdl.handle.net/123456789/23054
dc.languageen
dc.publisherMDPI
dc.rightsOpen Access
dc.sourceZafar, Syed Adeel, Arif, Muhammad Hamza, Uzair, Muhammad, Rashid, Umer, Naeem, Muham-mad Kashif, Rehman, Obaid Ur, Rehman, Nazia et al. 2022. Agronomic and physiological indices for reproductive stage heat stress tolerance in green super rice. Agronomy 12(8):1907.
dc.subjectrice
dc.subjectstress
dc.subjectfertility
dc.subjectgrain
dc.subjectyields
dc.titleAgronomic and physiological indices for reproductive stage heat stress tolerance in green super rice
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)