期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2011

37

6

627-631

10.3724/SP.J.1238.2011.00627

农业部马铃薯产业技术体系岗位科学家基金（CARS–10–P19）；

本校为第一机构

为探明马铃薯的抗旱机理，在离体培养条件下，对8个马铃薯品种进行5%/10%/15%/20%/25%、30%的聚乙二醇(PEG 6000)模拟干旱胁迫，研究马铃薯的茎叶发生、根系生长与细胞膜相对透性的变化。结果表明：随着PEG胁迫的加深，所有材料的叶片变小，除湘马铃薯1号外的其余7种材料的叶片数在10% ~ 30%PEG胁迫下均显著少于对照；马铃薯株高对PEG胁迫最敏感，在5% ~ 30%PEG胁迫下，8个马铃薯品种的株高均显著高于对照；在10% PEG胁迫下，除S.chacoense-1号外的其余7种材料的茎节数均显著少于对照，各材料的茎节生长开始受到影响；根系的伸长生长对干旱胁迫的敏感度高于根系数量，湘马铃薯1号在15%PEG胁迫下...

The effects of water stress induced by polyethylene glycol 6000（PEG 6000） on morphological characters and membrane permeability of seedlings were studied using 8 varieties of potatoes. Each of the potato varieties was treated with 0（CK）, 5%, 10%, 15%, 20%, 25% and 30% PEG respectively. The results showed that leaf size and number decreased with increasing concentration of PEG. Leaf numbers of all the materials but Xiang Potato 1 were significantly lower than CK when treated with 10% PEG. The elongation of stems was more sensitive to drought...