海水浸淹下乌桕不同种源幼苗的耐性比较

摘要

通过实验生理指标测定和相关统计分析,研究了乌桕不同种源对海水浸淹的耐性差异.将乌桕各项生理指标的耐性系数作为衡量乌桕单项耐海水能力的指标,利用主成分分析将原来的16个单项生理指标综合为4个相互独立的综合指标,再利用隶属函数法求出综合指标的隶属值,评价各种源海水浸淹下的耐性差异.评价结果表明,乌桕6个不同种源的基本耐性顺序为:XN1＞HZ2＞SC4＞GCH1＞HS1＞GC2.%Through measuring every physiological indexes of Sapium sebiferum seedlings from different provenances that inundated in seawater, the resistant ability differences of the seedlings from different provenances to the sea-water were studied. The 16 physiological indices were synthesized into four integrative and independent indices by principal component analysis, the memberships values of the integrative indices were calculated using subordination function method, thus the resistant ability differences of the seedlings from different provenances to the sea-water were evaluated. The comprehensive evaluation results show that their resistance ability to seawater inundating ordered from big to small as follows: XN1>HZ2>SC4>GCH1>HS1>GC2.