长白落叶松激素含量与生长的关系及在早期选择中的应用

用间接酶联免疫吸附法测定了不同季节不同种源长白落叶松激素含量。结果表明：不同季节长白落叶松的激素含量不同，速生期长白落叶松赤霉素、生长素和细胞分裂素含量高，脱落酸含量低，赤霉素／脱落酸比值大，生长缓慢期测定结果恰好相反。各类激素含量在不同种源长白落叶松间的变异显著，且与生长性状的差异密切相关。生长快的种源赤霉素，细胞分裂素含量高，脱落酸含量低，赤霉素／脱落酸之比大。生长慢的种源则相反。回归分析表明

RELATIONSHIP BETWEEN HORMONE CONTENT AND GROWTH IN LARIX OLGENSIS HENRY AND ITS APPLICATION IN EARLY SELECTION

Hormone content of L. olgensis of different provenances was measured with indirect ELISA in different season. Hormone content was different in different season. At fast growth stage, the content of gibberellic acid, cytokinin, and auxin was higher, abscisic acid content was lower, and gibberellic acid/abscisic acid ratio was bigger; while at slow growth stage, the condition was opposite. The diversity of hormone content of L. olgensis of different provenances was striking, and closely related to the diversity of growth properties. In provenances growing fast, content of gibberellic acid, cytokinin was higher, abscisic acid content was lower, and gibberellic acid/abscisic acid ratio was bigger; while in provenances growing slowly, the condition was opposite. Regressive analysis showed that content of gibberellic acid and cytokinin, gibberellic acid/abscisic acid ratio had remarkable positive correlation with growth of L. olgensis of different provenances; abscisic acid content had remarkable negative correlation with growth. Hormone content could be used as a physiology and biochemistry index in L. olgensis selection.