江汉平原引种滇楸优良无性系苗期试验初报

Preliminary Study on The Seedlings of Fine Clones ofCatalpa fargesii f. duclouxii Introduced in Jianghan Plain

摘要:

摘要：为了对江汉平原引种的滇楸优良无性系进行适应性及生长状况早期评价，本研究对34个滇楸优良无性系进行了苗期二级筛选试验，对32个滇楸雄性不育系进行了1年苗期对比试验。结果表明：滇楸二级筛选试验中各无性系间地径和树高差异均达到显著水平，但重复间差异不显著。32个贵州滇楸雄性不育系不同无性系间胸径和树高的差异均达到极显著水平。本研究为江汉平原进一步引种和选育滇楸新品种提供了科学依据。

Abstract:

Abstract:Aiming to early evaluate the adaptability and growth condition of fine clones of Catalpa fargesii f. duclouxii introduced in Jianghan plain, the second screening test on 34 clones of Catalpa fargesii f. duclouxii and the comparative test on 32 male sterile lines of Catalpa fargesii f. duclouxii at seedling stage for one year had been done. The results showed that the difference of ground diameter and tree height of the clones in the second screening test reached significant level, and there was no significant difference in the repeats.The difference of DBH and tree height of the 32 different male sterile lines reached extremely significant level. The study would provide a scientific basis for further introduction and selection of new varieties ofCatalpa fargesii f. duclouxii in Jianghan Plain.