紫薇家系播种品质及苗期生长性状变异  

The Sowing Properties and the Variation during Nurserying Cutivation Growth of Lagerstroemia indica Linn

作　　者：李楠[1] 杨俊明[2] 

机构地区：[1]浙江林学院林业与生物技术学院,浙江临安311300 [2]河北科技师范学院园艺园林系

出　　处：《林业科技开发》2009年第3期32-35,共4页China Forestry Science and Technology

基　　金：国家农业科技成果转化资金项目"彩叶植物新品种--中华金叶榆(美人榆)中试及示范"(编号:2007GB2A200029)

摘　　要：对9个紫薇家系种子的主要播种品质、一年生播种苗的苗期生长性状变异和年生长规律,及其自然越冬存活率进行了研究。结果表明:紫薇家系间的种子播种品质检验指标存在丰富的变异,其中生活力的变异最大。紫薇种子的发芽率与发芽势呈极显著正相关,与生活力显著相关。不同家系内个体间的苗高和地径变异幅度差异较大,家系间的苗高、地径生长量均存在极显著差异。采用Logistic方程能良好地拟合紫薇一年生苗高和地径生长过程。紫薇家系间苗木越冬存活率差异极显著,与生长性状无显著相关。Take 9 crape myrtle strains as the experiment materials in this study. The main seed-sown qualities, growth rhythm of one-year seedlings and the natural over wintering rate were analyzed. The results showed that there were rich variations on the seed-sown qualities, and the variation of seed viability was the biggest. A very significant positive correlation existed between germination potential and germination percentage, and seed viability was significant related with germination rate. The height and diameter of the seedlings＇ range of variation were great differences for the individuals among different families. There were significant differences between the height increment and its caliper among families. The growth process of the annual growth of height and caliper of crape myrtle could be simulated with Logistic equation. There were very significant differences among families in over wintering survival rate, and it had no correlation with growth indexes.

关 键 词：紫薇 家系 播种品质 生长性状 

分 类 号：S512.103.5[农业科学—作物学] S562