Open AccessVariations in agronomic and grain quality traits of rice grown under irrigated lowland conditions in West Africa
Author(s) -
GrahamAcquaah Seth,
Saito Kazuki,
Traore Karim,
Dieng Ibnou,
Alog Amakoe,
Bah Saidu,
Sow Abdoulaye,
Manful John T.
Publication year - 2018
Publication title -
food science and nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 27
ISSN - 2048-7177
DOI - 10.1002/fsn3.635
Subject(s) - yield (engineering) , amylose , agronomy , grain quality , grain yield , biology , brown rice , starch , materials science , food science , metallurgy , biochemistry
Rice breeding in West Africa has been largely skewed toward yield enhancement and stress tolerance. This has led to the variable grain quality of locally produced rice in the region. This study sought to assess variations in the agronomic and grain quality traits of some rice varieties grown in this region, with a view to identifying sources of high grain yield and quality that could serve as potential donors in their breeding programs. Forty‐five varieties were grown under irrigated conditions in Benin and Senegal with two trials in each country. There were wide variations in agronomic and grain quality traits among the varieties across the trials. Cluster analysis using paddy yield, head rice yield, and chalkiness revealed that 68% of the total variation could be explained by five varietal groupings. One group comprising seven varieties (Afrihikari, BG 90‐2, IR 64, Sahel 108, WAT 311‐ WAS ‐B‐B‐23‐7‐1, WAT 339‐ TGR ‐5‐2, and WITA 10) had high head rice yield and low chalkiness. Of the varieties in this group, Sahel 108 had the highest paddy yield in three of the four trials. IR 64 and Afrihikari had intermediate and low amylose content, respectively, with the rest being high‐amylose varieties. Another group of varieties consisting of B6144F‐ MR ‐6‐0‐0, C74, IR 31851‐96‐2‐3‐2‐1, ITA 222, Jaya, Sahel 305, WITA 1, and WITA 2 had high paddy yield but poor head rice yield and chalkiness. The use of materials from these two groups of varieties could accelerate breeding for high yielding rice varieties with better grain quality for local production in West Africa.