作者
Javed Iqbal Wattoo, Sara Liaqat, Hira Mubeen, Muhammad Ashfaq, Muhammad Naveed Shahid, Amjad Farooq, Muhammad Sajjad, Muhammad Arif
发表日期
2019
卷号
21
期号
5
页码范围
929-935
简介
Rice nutritional profile defines and characterizes the dimensions of grain quality. Biofortification of rice requires intense genetic and phenotypic screening to find donor parents to improve nutritional attributes of newly developed breeding lines. To detect significant marker trait associations for utilization in future breeding programs for improvement of grain quality, a segregating rice population was developed using Super Basmati and IRBB-57 to map the genetic basis of grain nutritional attributes. A total of 213 plants of F2 population were characterized for nutritional assays and genotyped using 94 SSR Markers. Based on linkage map of 94 markers, QTL analysis detected Twenty six main effect QTLs associated with 5 nutritional traits (protein, lipids, iron, zinc and calcium) on six linkage groups with major alleles contributed by Super Basmati with significant additive and phenotypic variance. Lipids, iron, zinc and calcium were newly examined in Basmati genome background with significant phenotypic variation (5.45–26.25%). A main effect QTL (qPC-8b) flanked by RM 313 and RM 309 on chromosome 8 influenced the protein content with phenotypic variation of 13.32%. For lipid contents, 18% phenotypic variation was explained by a major QTL (qLC-1) on chromosome 1 linked with RM 426 and RM 428. Maximum phenotypic variation (26.25%) was explained by a main effect QTL (qFe3) flanked by RM 211 and RM 233 controlling iron content on chromosome 3. The findings reveal that Super Basmati may be used as potential donor parent for nutritional improvement of future rice varieties. The linked SSR makers with all the associated traits could …
引用总数
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