Improvement of Vegetable Peas Varieties in Suburb of Lhasa and Its Comprehensive Evaluation
In order to solve the problems of single variety,poor taste and low yield of vegetable peas in Tibet,maturation time,yield and quality of vegetable peas were studied.Correlation analysis,principal component analysis,affiliation membership and cluster analysis were used for comprehensive evaluation.The result showed that'Zhongqin No.1'was the earliest-maturing pea variety in Lhasa,which was 20 days earlier than local peas.The highest fresh pod yield per plant of'Shijiatiancuiwan No.3'was 346.30 g.The taste of edible pod variety'American Sweet Pea'was the best among the varieties.As the result of the comprehensive analysis,four varieties,'Chengwan No.8','Chengwan No.10','American sweet pea'and'Shengshiherendou',had relatively high scores,which could be recommended as high-quality edible pea varieties in the region with similar ecological environments.
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