PurposeTo effectively utilize quinoa germplasm resources, we screened new quinoa varieties suitable for planting in Yunnan Dongchuan to promote the quinoa planting industry in Yunnan Province.
MethodThe experimental materials were 111 quinoa germplasm resources. In this study, abundance analysis, correlation analysis, principal component analysis and cluster analysis were used to compare and evaluate the agronomic characters of the 10 agronomic traits.
ResultThe observed coefficient of variation of the main agronomic traits of 111 quinoa resources was between 7.09% and 86.75%. The highest coefficient of variation was found in racemes length of branches, the smallest was the yield, and the average coefficient of variation was 27.13% abundant genetic diversity. There was correlation analysis showed that yield was significantly positively correlated with grain weight per plant (r=0.823, P<0.01), and yield was significantly positively correlated with 1000-grain weight (r=0.423, P<0.01). Through principal component analysis, 10 agronomic traits were integrated into five principal component factors. The cumulative contribution was 88.20%, and the agronomic traits affecting each principal component was analyzed. Through cluster analysis, the test materials were divided into 8 groups at D2=2.38. The characteristics of agronomic traits of different groups were analyzed comprehensively, which provided a theoretical basis for the screening and configuration of hybrid combinations of late quinoa specific varieties.
ConclusionThere is rich genetic diversity in 111 quinoa of germplasm resources, 22 germplasm accessions with elite traits (e.g. high stalk, short stalk, coarse stem, more spikelets, big grain good seed setting rate and high yield) were found being useful for future breeding and planting promotion in Dongchuan and surrounding areas of Yunnan Province.
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