染色体加倍对“珠美”海棠形态特征的影响  

Effect of Chromosome Doubling on Morphological Characteristics of Malus zumi

作　　者：郭玉[1] 邵建柱[1] 何建华[1] 徐继忠[1] 刘博燕[1] 王科峰[1] 

机构地区：[1]河北农业大学园艺学院,河北保定071000

出　　处：《北方园艺》2012年第16期101-104,共4页Northern Horticulture

基　　金：河北省科技厅科研资助项目(11220114D)

摘　　要：以二倍体"珠美"海棠为对照,研究了其同源四倍体形态特征的变化。结果表明:四倍体砧木树体生长量变小,树体高度和干径分别是对照的41%、72%;一级、二级侧根数多,骨干根数量(直径>2mm)少且细,分别是对照的1.50倍、1.65倍和56%;长、中、短枝数均减少,枝皮变厚,分别是对照的1.7%、16.3%、9.3%和1.33倍;叶长、叶宽和叶柄长均减小,分别是二倍体对照的77%、89%和63%;气孔长和气孔宽均变大,分别是对照的1.13和1.68倍,但气孔密度降低,是对照的55%;皮孔横径和面积变大,密度变小,分别是对照的1.15倍、1.13倍和55%。Taking diploid Malus zumi as control, the changes of morphological characteristics of tetraploid Malus zumi were studied. The results showed that the height and the diameter of trees were 41% and 72% of the control, respectively. The number of the .first and the second lateral roots were 1.50 and 1.65 times of the control, respectively. The diameter of the backbone roots became lessened,and the number was 56% of the control. The number of the long, medium and the short shoot was 1.7%,16. 3% and 9. 3% of the control. The thickness of the shoot bark was thicker and1.33 times of the control. The length and width of the leaf and the length of the petiole were 77% ,89% and 63% of the control,respectively. The length and width of the stomatal were bigger,and 1. 13 and i. 68 times of the control. However, the density of the stomatal was 55% of the control. The diameter and the area of the lenticel were 1.15 and 1.13 times of the control,however the density of the lenticel was55% of the control.

关 键 词：“珠美”海棠 四倍体 形态特征 

分 类 号：S661.4[农业科学—果树学]