Genetic divergence in northern Benin sorghum (Sorghum bicolor L. Moench) landraces as revealed by agromorphological traits and selection of candidate genotypes.
Genetic divergence in northern Benin sorghum (Sorghum bicolor L. Moench) landraces as revealed by agromorphological traits and selection of candidate genotypes.
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DOI：
10.1155/2015/916476
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发表时间：
2015
影响因子：
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通讯作者：
Akpagana K
中科院分区：
文献类型：
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作者：
Dossou-Aminon I;Loko LY;Adjatin A;Ewédjè EE;Dansi A;Rakshit S;Cissé N;Patil JV;Agbangla C;Sanni A;Akoègninou A;Akpagana K
二色Sorcium bicolor（L.）Moench]是贝宁北方重要的主食作物。为了评估其在贝宁的多样性，142个加入收集的地方品种从北方贝宁在贝宁中部生长，其特征在于使用10个定性和14个定量农业形态性状。质量和数量性状之间的高变异性。籽粒产量（0.72-10.57吨/公顷）、穗重（15-215.95克）、至50%开花的天数（57-200天）和株高（153.27-636.5厘米）是表现出更广泛变异性的性状。确定了数量性状之间的相关性。例如，籽粒产量与穗重（r = 0.901，P = 0.000）和百粒重（r = 0.247，P = 0.000）呈高度正相关。UPGMA聚类分析将142份材料分为89个形态型。通过多因素分析，筛选出20个有希望的高粱基因型。其中，AT 41、AT 14和AT 29表现出早熟（57 ~ 66天开花至50%）、高产（4.85 ~ 7.85吨/公顷）和较矮的株高（153.27 ~ 180.37厘米）。所取得的成果将有助于提高高粱产量和多样性，并开发出更适合贝宁目前土壤和气候条件的新品种。
Sorghum [Sorghum bicolor (L.) Moench] is an important staple food crop in northern Benin. In order to assess its diversity in Benin, 142 accessions of landraces collected from Northern Benin were grown in Central Benin and characterised using 10 qualitative and 14 quantitative agromorphological traits. High variability among both qualitative and quantitative traits was observed. Grain yield (0.72–10.57 tons/ha), panicle weight (15–215.95 g), days to 50% flowering (57–200 days), and plant height (153.27–636.5 cm) were among traits that exhibited broader variability. Correlations between quantitative traits were determined. Grain yield for instance exhibited highly positive association with panicle weight (r = 0.901, P = 0.000) and 100 seed weight (r = 0.247, P = 0.000). UPGMA cluster analysis classified the 142 accessions into 89 morphotypes. Based on multivariate analysis, twenty promising sorghum genotypes were selected. Among them, AT41, AT14, and AT29 showed early maturity (57 to 66 days to 50% flowering), high grain yields (4.85 to 7.85 tons/ha), and shorter plant height (153.27 to 180.37 cm). The results obtained will help enhancing sorghum production and diversity and developing new varieties that will be better adapted to the current soil and climate conditions in Benin.