福建林学院学报2018，Vol.38Issue(2)：222-228,7.DOI:10.13324/j.cnki.jfcf.2018.02.015
不同马尾松家系抗旱性评价
Drought resistance comparison of different Pinus massoniana family
摘要
Abstract
Drought-resistant of 183 Pinus massoniana families were screened by the combination of repeated drought and field identification methods. The results showed that, when 50% seedlings were permanent wilting under repeated drought stress, the wilting degree distribution of the seedlings was 60.8%-100.0% and the mean value was (85.0± 8.2)%. After the treatment, the survival rate of the seedlings was varied among 0%-100% with mean value of (56.1± 23.0)%, and the witheriness index of the P. massoniana family was significantly negatively correlated with survival rate which indicating that the evaluation results of 2 indexes were consistent.Among the 20 species of P.massoniana families,the tree height of 10 families with better drought resistance was 18.3% and 18.7% higher than the 10 families with poor drought resistance. The results showed that there were significant correlations or highly significant correlations among the four evaluation indexes, including the survival rate, survival rate of afforestation and tree height growth rate of the 20 families. The drought resistance of 20 families was evaluated by the membership function method,and the results suggests that the drought resistance of the seedlings could be ranked by the followings:P-8>P-43>P-39>P-41>P-26>N-62>P-16>T-3>P-18>P-30>T-15>T-4>T-17>N-64>N-67>N-22>Q-7>T-6>P-25>T-14, P-8 perform best against drought resistance while T-14 perform weakest.关键词
马尾松家系/抗旱性/干旱胁迫/田间鉴定Key words
Pinus massoniana family/drought resistance/drought stress/field identification分类
农业科技引用本文复制引用
唐生森,唐鑫,吴东山,杨章旗..不同马尾松家系抗旱性评价[J].福建林学院学报,2018,38(2):222-228,7.基金项目
广西林业科技项目(桂林科字[2016]第1号) （桂林科字[2016]第1号）
八桂学者专项(2011A015) （2011A015）
广西科技项目(桂科AD16380010) （桂科AD16380010）
中央财政林业科技推广示范资金项目([2016]TG09号). （[2016]TG09号）
