18份甜瓜资源农艺性状调查OA

In this study,18 melon resources were used as the experimental materials,and the randomized block design was adopted.Agronomic characters such as phenology,leaf,vine,flower and yield of 18 muskmelon resources were investigated and analyzed.The diversity of agronomic characters was studied and cluster analysis was carried out.The results showed that the phenological variation coefficient ranged from 5.24％ to 15.43％,the variation coefficient of leaf agronomic characters ranged from 9.86％ to 21.06％,the variation coefficient of vine agronomic char-acters ranged from 9.56％ to17.47％,the variation coefficient of flower agronomic characters ranged from 13.12％ to 27.17％ and the yield variation coefficient ranged from 65.42％ to 66.75％in these melon resources.The results of the cluster analysis showed that the 18 melon re-sources could be divided into five categories by phenological phase clustering,of which the first category resources had the longest female flow-ering period and the shortest growth period,the fifth category resources had the longest growth period.18 melon resources could be divided into three categories by clustering the leaf and vine agronomic characters,of which the second category were robust and had strong branches.The flowering agronomic characters and yield clustering showed that the 18 melon resources could be divided into four categories,of which the sec-ond category was weak in fruit setting ability and the fourth type had high yield with an average fruit weight of 2.58 kg.Resources No.3,No.7 and No.8 could be preferred as parent materials when new varieties of melon that were suitable for facility cultivation and early maturing were breeded.And when new varieties of melon that were suitable for facility cultivation,late maturing and high yield were breeded,No.10 resources could be preferred as parent materials.