Analysis on Correlation and Grey Correlative Degree of Onion Agronomic Traits(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Analysis on Correlation and Grey Correlative Degree of Onion Agronomic Traits

Keywords:: onion(Allium cepa L); agronomic traits; correlation coefficient; grey correlative degree

Abstract:: Correlation and grey correlative degree between 10 agronomic traits and fresh weight of 27 onion samples，which were collected from An’ning River valley of Sichuan were analyzed.The results indicated that the fresh weight of onion was significant positive correlated with transverse diameter，longitudinal diameter，open scales fresh weight，closed scales fresh weight，dry matter content，number of open scales and closed scales，bulb expansion period，with correlation coefficients of 0.851，0.808，0.985，0.752，0.814，0.635，0.581 and 0.731.Fresh weight of onion was also positive correlated with period of duration and number of leaf with correlation coefficients of 0.334 and 0.309.Grey correlation analysis showed that the correlative degrees of different traits to fresh weight of onion were：open scales fresh weight>transverse diameter>dry matter content>longitudinal diameter>closed scales fresh weight>bulb expansion period>number of open scales>number of cosed scales>period of duration>number of leaf.So in An’ning river valley，Sichuan，open scales fresh weight，transverse diameter and dry matter content were the main factors affecting fresh weight of onion，and could be used as the main traits in high-yield breeding，at the same time the other traits should be concerned.

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Last Update: 2014-08-30