马铃薯抗旱品种筛选及鉴定试验

山西是我国马铃薯种薯和商品薯的主要产地之一,然而由于干旱缺水使得马铃薯生产发展受到严重限制。为筛选出抗旱性强的马铃薯品种,对引进的15个马铃薯品种进行盆栽抗旱性鉴定,分析了各品种的抗旱系数、抗旱指数、株高胁迫指数、离体叶片失水率等指标。结果表明:株高胁迫指数和叶片失水率与抗旱系数均呈极显著负相关,可以作为鉴定马铃薯抗旱能力的指标。并依据此,从引进的15个品种中筛选出中薯19号、晋薯24号、晋薯16号和同薯29号等4份抗旱性较强的品种,适宜在晋北地区推广种植。

Screening and Identification Test of Drought Resistant Potato Varieties

Shanxi Province is one of the major producing areas for seed potato and commodity potato in China．However，due to drought and water shortage，the development of potato production was severely restricted．In order to screen out potato varieties with strong drought resistance，this paper conducted droughtresistance identification on 15 potato varieties introduced from abroad and cultivated in pot；and analyzed drought resistance coefficient，drought resistance index，plant height stress index，and water loss rate of isolated leaves of each variety．The results showed that the plant height stress index and water loss rate were extremely significantly negatively correlated with drought resistance coefficient and could be used as indicators to identify drought resistant ability．Based on these results，4 drought-resistant varieties out of the 15 tested varieties，‘Zhongshu No. 19’，‘Jinshu No.24’，‘Jinshu No.16’ and‘ Tongshu No.29’ were screened．They are suitable for planting and extension in northern Shanxi．