摘要
对700多份烤烟种质资源的形态特征、主要性状、抗病性和烟叶化学成分等方面的差异性进行研究和分析，结果表明：烤烟种质资源形态差异主要表现在株型、叶形、叶耳、叶尖、茎叶角度和花序等特征上；主要性状差异表现在株高、打顸株高、叶数、节距、茎围、腰叶的长和宽等性状，其变幅分别为97．0—326．0cm、75.3～133.7cm、8．6—54片、2．6—10．1cm、6.3～13．8cm、41．6-99．0cm、16.6—47．8cm；脚叶、腰叶和项叶的长宽比变幅分别为1．3～3，7、1．5—4．9、1．6～5．8；移栽至现蕾的天数变幅为30-100d；各性状指标的变异系数在7．8％-30．3％之间。不同种质间烟叶化学成分差异较大，变异系数在16．4％-69．2％之间。在702份种质中，抗病、中抗、感病和中感病的种质分别占18．2％、36．0％、6.6％、39．0％，可提供丰富的种质资源供育种选择利用。
The discrepancy analysis of more than 700 flue-cured tobacco germplasm resources has been researched in the aspects of botanical traits, primary characters, disease resistant and tobacco leaf chemical component. The results showed that the discrepancy of flue-cured tobacco germplasm resources were mainly in the plant type, leaf shape, leaf auricle, leaf apex, angle of leaf and inflorescence. In addition, the main characters had certain differences. The range of plant height, wiping plant height, total leaves, node distance, stem, breadth and length of middle leaf were 97.0-326.0cm, 75.3-133.7cm, 8.6-54 leaves, 2. 6-10. lcm, 6.3-13.8cm, 41.6- 99.0cm, 16.6-47.8cm respectively. The range of proportion of the lower leaf, cutters, and upper leaf are 1.3- 3.7,1.5-4.9,1.6-5.8 separately. The range of budding period stage was 30-100 days. The coefficients of variation of the main characters were 7.8%-30. 3%. There were great differences in tobacco leaf chemical component for different germplasm resources, and the coefficient of variation was from 16.4% to 69.2%. Among 702 germplasm resources, the percentage of disease resistance, medium resistance, susceptibility, medium susceptibility was 18.2% , 36.0% , 6.6% , 39.0% respectively, and the considerable germplasm resources may offer the breeders with multiple choices in the future breeding programs.
出处
《植物遗传资源学报》
CAS
CSCD
2006年第4期415-420,共6页
Journal of Plant Genetic Resources
基金
云南省烟草专卖局(公司)科技项目(04A2004A21)
关键词
烟草
种质资源
形态学特征
主要性状
化学成分
抗病性
差异性
Tobacco
Germplasm resources
Morphology trait
Primary characters
Chemical component
Disease resistance
Discrepancy
