A Comparative Study on the Microstructure of the Leaves of Different Pyrus ussuriensis Maxim.Cultivars  

不同秋子梨品种叶片显微结构比较研究(英文)

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作  者:刘畅[1] 刘延杰[1] 卜海东[1] 顾广军[1] 冯章丽[1] 程显敏[1] 于文全[1] 王蕊 王昆[3] 

机构地区:[1]黑龙江省农业科学院,牡丹江分院157041 [2]黑龙江省现代农业示范区管理中心,辽宁哈尔滨150000 [3]中国农业科学院果树研究所,辽宁兴城125100

出  处:《Agricultural Science & Technology》2017年第12期2520-2523,共4页农业科学与技术(英文版)

基  金:公益性行业(农业)科研专项"我国重要野生果树资源的收集,评价与优异种质创新利用技术研究与示范"(201303093)~~

摘  要:Through scanning electron microscope and optical microscope, a compara- tive study on morphological features and anatomical characters of the leaves of some pear cultivars (strains) was carried out. The results showed that the size and shapes of leaf epidermal cells were different, stomatal apparatuses were distributed in the hypodermis, the shapes of stornas were mainly oval, and these of 'Jinxiang- shui' were long oval; the stomatal type was irregular, the cultivar with the maximum density of leaf stomas was 'Jinxiangshui', and the minimum was 'Aishanli'. The thickness of palisade tissues and spongy tissues of different pear cultivars (strains) was different, the maximum thickness of palisade tissues of 'Aishanli' was 105.5 iJm, and the maximum thickness of spongy tissues of 'Jinxiangshui' was 98.4 IJm. The ratios of palisade tissues to spongy tissues from high to low were 'Qiuyueli', 'Zaoxiangshui', 'Aishanli', 'Hongjinqiu' and '8404'. The differences on these mi- cromorphological characters among different pear cultivars (strains) had important significance to the identification of the cultivars and the early choice of breeding.通过扫描电子显微镜和光学显微镜,对黑龙江省栽培的部分梨品种(系)的叶片形态学特征和解剖学特征进行了比较研究。结果表明:梨品种(系)叶片表皮细胞大小、形态不同,气孔器发生在下表皮,形状多为卵圆形,‘金香水’是长卵圆形;气孔类型为不规则形,气孔密度最大的是‘金香水’,最小的是‘矮山梨’。不同梨品种(系)的栅栏组织和海绵组织厚度不同,‘矮山梨’栅栏组织厚度最大为105.5μm,海绵组织‘金香水’厚度最大为98.4μm。栅海比由大到小依次为:‘秋月梨’‘早香水梨’‘矮山梨’‘金香水’‘红金秋’、8404。这些微形态特征在品种(系)间的差异,对品种的鉴定和育种的早期选择有一定的意义。

关 键 词:PEAR Leaf STOMAS Palisade tissues Spongy tissues 

分 类 号:S661.2[农业科学—果树学]

 

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