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

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Title Agronomic and physiological indices for reproductive stage heat stress tolerance in green super rice
 
Creator Zafar, Syed Adeel
Arif, Muhammad Hamza
Uzair, Muhammad
Umer Rashid
Naeem, Muhammad Kashif
Rehman, Nazia
Zaid, Imdad Ullah
Farooq, Muhammad Shahbaz
Zahra, Nageen
Saleem, Bilal
Xu, Jianlong
Zhikang Li
Ali, Jauhar
Ali, Ghulam Muhammad
Yang, Seung Hwan
Khan, Muhammad Ramzan
 
Subject rice
stress
fertility
grain
yields
 
Description Optimum 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.
 
Date 2022-08-14
2023-01-05T10:50:45Z
2023-01-05T10:50:45Z
 
Type Journal Article
 
Identifier Zafar, 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.
2073-4395
https://hdl.handle.net/10568/126609
https://doi.org/10.3390/agronomy12081907
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 1-17
application/pdf
 
Publisher MDPI
 
Source Agronomy