摘要
为鉴别与利用澳洲坚果种质资源,以湛江地区栽培的25份澳洲坚果种质为试验材料,调查研究叶片的14个表型性状,并对部分性状进行遗传变异与相关性分析。结果表明:供试澳洲坚果资源的叶片表型性状(叶序、嫩叶颜色、叶片形状、叶尖形状、叶基形状、叶缘形状、叶缘刺多少、叶面状态、嫩叶黄化、叶面积、叶长、叶宽、叶形指数、叶柄长度)具有明显的变异性。其中,叶片5个数量性状的变异系数为13.47%~25.19%,变异幅度以叶面积最大、叶片长度最小;各数量性状数据分布均为偏正态分布,偏度大小范围为-0.20~1.33。相关性分析结果表明,叶面积与叶形指数均与叶片长度及其宽度间存在极显著的相关性,而叶柄长度与叶面积、叶片长度、叶片宽度及叶形指数之间的相关性均不显著。因此,澳洲坚果种质资源的叶片表型性状显示出较为丰富的遗传多样性,部分数量性状之间存在较为密切的关系。并且,运用石蜡切片法,对澳洲坚果叶片的解剖结构特征进行了初步观测。
In order to identify and utilize the germplasm resources of macadamia,fourteen morphological characters of leaf were investigated from 25 germplasm resonrces of macadamia in Zhanjiang region,and the genetic variation and correlation of some traits was studied.The results showed that the tested germplasm resources of macadamia had rich variation in leaf morphological characters(phyllotaxis,young leaf colour,leaf shape,leaf tip shape,leaf base shape,leaf margin shape,quantitive of leaf margin sting,foliar state,leaflet etiolation,leaf area,leaf length,leaf width,leaf index and petiole length).The wide variation was among the five quantitative characters of leaf with variation coefficient of 13.47%-25.19%,and the variation range in leaf area was the widest,while that in leaf length was the narrowest.All the quantitative traits data were skewed normal distribution,the skewness ranged from-0.20 to 1.33.The correlation analysis showed that leaf area and leaf index were all extremely significantly correlated with leaf length and leaf width,but no significant correlation was occurred between petiole length and leaf area,leaf index,leaf length and leaf width.Therefore,the phenotypic genetic diversity of leaf was abundant in macadamia germplasm resources,and there were close relationships among some quantitative traits.Additionally,leaf anatomical characteristics of macadamia were preliminary observed using paraffin sectioned.
作者
杨为海
曾利珍
曾辉
万继锋
陈倪
邹明宏
陆超忠
张汉周
罗炼芳
朱文华
YANG Weihai;ZENG Lizhen;ZENG Hui;WAN Jifeng;CHEN Ni;ZOU Minghong;LU Chaozhong;ZHANG Hanzhou;LUO Lianfang;ZHU Wenhua(South Subtropical Crops Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang,Guangdong 524091,China;Key Laboratory of Tropical Fruit Biology,Ministry of Agriculture and Rural Affairs,Zhanjiang,Guangdong 524091,China;Guizhou Institute of Subtropics Crops,Xingyi,Guizhou 562400,China)
出处
《热带作物学报》
CSCD
北大核心
2020年第1期69-76,共8页
Chinese Journal of Tropical Crops
基金
广东省省级科技计划项目(No.2017A030303003)
中央公益性基本科研业务费专项(No.1630062017004,No.1630062019012)
关键词
澳洲坚果
种质资源
叶片性状
变异
相关性
解剖结构
macadamia(Macadamia spp.)
germplasm resource
leaf trait
variation
correlation
anatomical structure
