青海露地夏植不同大白菜品种的耐抽薹性评价

Evaluation of bolting-resistant of different Chinese cabbage varieties planted in open field during summer in Qinghai

为筛选出适宜青海地区种植的耐抽薹白菜品种,在高原生态条件下对国内外收集的32个大白菜品种进行耐抽薹性鉴定。通过调查播种至抽薹天数,初步评价其抽薹性;测定不同品种中心柱长度,对抽薹性进行再评价。结果表明:大白菜不同品种之间的耐抽薹性差异很大;32个品种按其耐抽薹性初步分为耐抽薹性强、中、弱和易抽薹4类。通过再评价,最终筛连出耐抽薹性强的品种5个,耐抽薹性中的品种3个,耐抽薹性弱的品种11个,其中耐抽薹性强的品种可以在青海地区生产使用。

To screen bolting -resistant Chinese cabbage varieties suitable for Qinghai, the identification and evaluation of 32 varieties with tolerance to bolting were done under plateau ecological conditions. The 32 varieties were collected at home and abroad. The days from sowing to bolting were in- vestigated to evaluate the bolting - resistant of the varieties. The length of central column was meas-ured to review bolting resistance. The results showed that the bolting tolerance among different varieties were obvious different. The 32 varieties were divided into four categories, high, medium, weak and easy bolting - resistant. There were 5 varieties with high resistance to bolting, 3 varieties with medium resistance to bolting, and 11 varieties with week resistance to bolting. The varieties with high resistance to bolting can be used in Qinghai Province for production