摘要
以苹果和梨的二倍体和多倍体为试材，比较了气孔保卫细胞叶绿体数目、气孔密度、气孔长和气孔宽四个性状与倍性的关系，分析各个性状用于倍性鉴定的可靠性，并采用两类性状同时进行判别分析，建立判别分析方程。结果表明，叶绿体数目和气孔长鉴定倍性的可靠性较高，其中，苹果气孔长误判率最低，为６．６７ ％ ；梨气孔保卫细胞叶绿体数目误判率最低，为１２．５ ％ 。如以这两个性状进行判别分析，苹果判别方程鉴定倍性的可靠性与以气孔长鉴定倍性的可靠性相似。
apple and 24 pear varieties w ere used as m aterials for this study.The num ber of chloroplast in stom ata guard cell, density, length and w idth of stom ata w ere observed. The re- sults show ed thatthe cluster analysis indicated thatploidy w as highly correlated to the num ber of chloroplastin guard celland the length ofstom ata. Ifthese tw o factors w ere added in discrim inant form ula, the reliability ofploidy identification in apple by discrim inantfunction w as sim ilar to its reliability based on length ofstom ata alone. How ever, the reliability w as increased significantly in pear by the discrim inantfunction w hich w as involved the tw o factors.
出处
《果树科学》
CSCD
北大核心
1999年第1期9-13,共5页
Journal of Fruit Science
关键词
果树多倍体
苹果
梨
气孔性状
倍性鉴定
Fruit polyploid
Apple
Pear
Stom ata feature
Identification of ploidy
Discrim inant form ula
