Genetic variation of fine individual plants' leaf characteristics of wild apricot in Inner Mongolia
In order to study the genetic variation and genetic diversity of important traits of wild apricot in Inner Mongolia,distribution and variation of fine individual plants' leaf characteristics of wild apricot in Inner Mongolia and its' correlation with yield and kernel were analyzed.The results showed that the leaf characteristics,such as length,width,length-width ratio,stalk,tip,showed normal distribution.Leaf tip had a bigger variation,and coefficient of variation reached 0.4.Variation coefficients of leaf stalk,leaf width,leaf length and leaf length-width ratio were 0.17,0.16,0.15,and 0.09,respectively.Through cluster analysis and multiple comparisons,leaf length could be divided into 9 groups,i.e.very short,short,little short,middle,little long,long,very long,extremely long,and super long; leave width could be divided into 9 groups,i.e.extremely narrow,very narrow,narrow,little narrow,middle,little wide,wide,very wide,and extremely wide; leaf length-width ratio could be divided into 7 groups,i.e.very wide round,wide round,little wide round,middle,little long round,long round,and very long round; leaf stalk could be divided into 7 groups,i.e.extremely short,very short,short,little short,middle,little long,and long; leaf tip could be divided into 9 groups,i.e.very short,short,little short,middle,little long,long,very long,extremely long,and super long.The results of correlation analysis showed that leaf characteristics and yield had no significant correlation,but leaf tip and kernel rate had very significant correlation.This article could offer a theoretical basis for variety improving and breeding fine individual plants in apricot.