摘要
烟草不同品种平均P_n与Pr的关系、不同组合F_1代平均P_n与Pr的关系以及不同杂交组合内不同世代(P_1、P_2、F_1,反交F_1、F_2,B_1、B_2)的单株P_n与Pr的关系均为正相关;Pr与(P_n+Pr)的比值为22～24％,因群体不同而异,但个体之间差异很小;P_n、Pr与叶片鲜重、干重、叶长、叶宽、叶面积的关系依不同群体而异,在多数群体中表现程度不同的正相关。值得注意的是F_1代的平均P_n的超高亲优势率与叶长/叶宽比值的超高素优势率呈显著正相关。
The correlation coefficient is positive between Pn and Pr in different groups (P_1, P_2, F_1,F_2,B_1,B_2)of tabacco at floral irritation,the ratio of Pr to(Pn+Pr) bordering on 22-24%. The correlation coefficient between two (Pn and Pr)and five characters (fresh leaf weight, dry leaf weight, leaf long, leaf breadth,leaf area) is different in different groups. The significant correlation between true superority of Pn and true superority of the ratio of leaf long to leaf breadth was found.
关键词
烟草
叶片性状
光合作用
遗传
Tabacco
Net photosynthetic rate
photorespiratory rate
lelf character
correlation
