马铃薯新型栽培种耐盐性鉴定与筛选

Identification and Selection of Salt-tolerant Clones in Neo-tuberosum

通过观察65份马铃薯新型栽培种材料和4个生产上常用的马铃薯品种的试管苗在含有不同NaHCO3浓度MS培养基上的生长状况,对其耐盐性进行初步鉴定,并对各平均株高和生物产量范围内不同耐盐性材料的分布情况进行分析。结果表明:在平均株高2￣5cm、生物产量0.5￣1.5g.瓶-1的范围内,耐盐性较好的材料分布最多且平均耐盐性最好,在这两个范围内筛选材料,效率要明显高于其它区域。经耐盐性鉴定,A4、B7等7份材料达到耐盐标准,C5、F5等25份材料达到中等耐盐标准。经最小显著差数法测验共筛选出B13、D5等15份耐盐性显著优于生产上常用品种的材料。

The growth of seedlings of 65 Neo-tuberosum materials and 4 potato varieties （Dongnong 303, Atlantic, Shepody and Kexin 1） in the MS medium Containing 0（CK）, 0.1%, 0.2%, 0.3%, and 0.4% NaHCO3 were studied in order to test their salt-tolerance, and the distribution of different salt-tolerant materials in different ranges of seedling heights and biology yields were studied too. Most of the salt-tolerant and mid-salt-tolerant materials were in the range of 2-5 cm of seedling heights or 0.5-1.5 g per bottle Of biology yields. It may be more efficient to select salt-tolerant materials in these ranges than others. Seven salt-tolerant materials and 25 mid-salt-tolerant materials were selected based on salt-tolerance evaluation. Sixteen materials with salt-tolerance significantly higher than that of the 4 varieties were selected.