广东省烟草种质资源特征分析

Characteristic Analysis of Tobacco Germplasm Resources in Guangdong

为更好地了解和利用所保存的烟草种质资源,2007年对86份烤烟种质资源的主要性状进行了研究,试验设两次重复,每小区种植22株,各小区随机调查5株。结果表明,主要性状差异表现在株高、茎围、节距、叶数、叶长、叶宽等性状,其变幅分别为110.4～326.2 cm、6.3～12.9 cm、2.5～8.8 cm、15.2～59.0片、42.3～77.2 cm、16.0～38.0cm,变异系数分别为13.5%,9.4%,21.2%,17.1%,10.3%,13.6%,Shannon指数分别达到2.090,2.133,2.167,1.916,2.172和2.189。说明广东省烤烟种质资源在主要性状方面具有丰富的遗传多样性,大部分资源的主要性状可供育种工作者选择利用。

In order to well understand and utilize the conserved tobacco germplasm resources, the main characters of 86 flue-cured tobacco germplasms were studied in 2007. The results showed that the main characteristic difference occurred in plant height, stem, leaf number, pitch, leaf length and leaf width, ranging in 110.4-326.2 cm, 6.3-12.9 cm, 2.5-8.8 cm, 15.2-59.0 leaves, 42.3-77.2 cm, 16.0-38.0 cm, respectively, and the coefficients of variation were 13.5 %, 9.4%, 21.2%, 17.1%, 10.3%, 13.6%, respectively. The Shannon index reached 2.090, 2.133, 2.167, 1.916, 2.172 and 2.189, respectively. It is concluded that the resources in the main characters of flue-cured tobacco have high level genetic diversity, and the main characters of most resources are available for breeders.