Introgression of Drought Tolerance into Elite Basmati Rice Variety through Marker-Assisted Backcrossing

文献类型： 外文期刊

第一作者： Sabar, Muhammad

作者： Sabar, Muhammad;Naveed, Shahzad Amir;Awan, Tahir;Arif, Muhammad;Sabar, Muhammad;Naveed, Shahzad Amir;Khan, Muhammad Ramzan;Abbas, Zaheer;Naveed, Shahzad Amir;Shah, Shahid Masood;Khan, Abdul Rehman;Shah, Muhammad Musaddiq;Arif, Muhammad

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关键词： Drought QTL; SSR markers; basmati rice; drought; marker assisted breeding

期刊名称：PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：1.7； 五年影响因子：1.4 ）

ISSN： 0031-9457

年卷期： 2023 年 92 卷 5 期

页码：

收录情况： SCI

摘要： Drought is one of the major abiotic threat to rice production in the context of climate change. Super Basmati is an elite, fine grain basmati rice variety grown in Punjab, Pakistan. Due to drought sensitive in nature, its yield has been facing an alarming situation in production because of gradual decrease in irrigated water for a couple of years. Three reported novel QTLs for drought tolerance were selected for incorporation into Super Basmati by employing marker assisted selection strategy. IR55419-04 with novel QTLs was used as a donor parent. Foreground selection was performed by applying PCR based QTL linked SSR markers followed by recombinant selection by using 2-4 flanking markers. Background selection was exercised by using polymorphic SSR markers for maximum genome recovery of the Super Basmati. The individuals homozygous at the target QTLs and with maximum background of Super Basmati at the rest of the non-target genome was selected for evaluation of drought tolerance. Under drought stress conditions, the yields of all introgressed lines (ILs) were 44.2%-125.7% higher than recurrent parent. Six superior ILs that are drought tolerant and very similar to Super Basmati in terms of agronomic and grain quality traits are marked for release as drought-tolerant varieties in arid regions or for use in breeding programs of high grain quality and drought-tolerant parents.

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