论文部分内容阅读
经１９８８～１９９０年对６个烤烟品种、２个白肋烟品种及其杂种Ｆ_１、Ｆ_２、Ｂ_１及Ｂ_２旺长期叶绿素含量的遗传与现蕾期烟叶Ｐ_ｎ和单株烟叶产量的相关研究表明：１．白肋烟与烤烟叶绿素含量的差异达极显著水平，烤烟内品种间叶绿素含量也存在显著差异，不同组合Ｆ_１叶绿素含量有显著差异，而Ｃｈｌａ／ｂ在不同类型、不同品种及杂交后代不同世代内的变异均极小；２．白肋型与正常绿叶型的差异主要受两对重叠基因的控制，正常绿叶型为显性，烤烟型品种间叶绿素含量的差异受修饰基因的影响，Ｃｈｌａ／ｂ的遗传力高于Ｃｈｌａ、Ｃｈｌｂ及Ｃｈｌ（ａ＋ｂ）的遗传力；３．Ｃｈｌａ与Ｃｈｌｂ呈极显著正相关；４．Ｃｈｌａ、Ｃｈｌｂ及Ｃｈｌ（ａ＋ｂ）与Ｐ_ｎ及单株烟叶经济产量的鲜重呈极显著正相关，与单株烟叶经济产量的干重呈显著正相关。
The correlations between the genetic and budding P_n and the leaf yield per plant of six flue-cured tobacco cultivars, two burley tobacco cultivars and their F1 hybrids F_1, F_2, B_1 and B_2 from 1988 to 1990 showed that: 1 . The difference of chlorophyll content between burley and flue-cured tobacco reached an extremely significant level. There was also a significant difference in chlorophyll content among different varieties. The content of chlorophyll of F_1 in different combinations was significantly different. Chla / b was different in different generations, The variation is very small; 2. The differences between the rib type and the normal green type were mainly controlled by two overlapping genes, the normal green type was dominant, the difference of chlorophyll content in flue-cured tobacco varieties was affected by the modified gene, and the heritability of Chla / b was higher than that of Chla and Chlb And Chl (a + b) heritability; 3. Chla and Chlb were significantly and positively correlated; 4. Chla, Chlb and Chl (a + b) were significantly and positively correlated with the P_n and the fresh weight of economic yield per plant, and positively correlated with the dry weight of the economic yield per plant.