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当前位置: 首页 > 文章 > 染色体加倍对“珠美”海棠形态特征的影响 北方园艺 2012 (16) 101-104
Position: Home > Articles > Effect of Chromosome Doubling on Morphological Characteristics of Malus zumi Northern Horticulture 2012 (16) 101-104

染色体加倍对“珠美”海棠形态特征的影响

作  者：
郭玉;邵建柱;何建华;徐继忠;刘博燕;王科峰
单  位：
河北农业大学园艺学院
关键词：
珠美海棠;四倍体;形态特征
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%。
译  名：
Effect of Chromosome Doubling on Morphological Characteristics of Malus zumi
作  者：
GUO Yu,SHAO Jian-zhu,HE Jian-hua,XU Ji-zhong,LIU Bo-yan,WANG Ke-feng(College of Horticulture,Hebei Agricultural University,Baoding,Hebei 071000)
关键词：
Malus zumi;tetraploid;morphological characteristics
摘  要：
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 1.50and 1.65times 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 and 1.33times 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 1.13and 1.68times of the control.However,the density of the stomatal was 55%of the control.The diameter and the area of the lenticel were 1.15and 1.13times of the control,however the density of the lenticel was55%of the control.

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