| 曾宪海1，3，焦云飞2，廖子荣1，潘登浪1，林位夫1.广东不同地区引种油棕叶片解剖结构对油棕抗寒力的影响[J].广东农业科学,2018,45(8):50-58 |
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广东不同地区引种油棕叶片解剖结构对油棕抗寒力的影响 |
| Effects of leaf anatomical structure features on cold resistance of oil palm（Elaeis guineensis Jacq.）introduced in different regions in Guangdong Province |
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| DOI：10.16768/j.issn.1004-874X.2018.08.008 |
| 中文关键词: 油棕 叶片解剖结构 抗寒性 海绵组织厚度 角质层厚度 |
| 英文关键词: oil palm leaf anatomical structure cold resistance spongy mesophyII thickness cuticle thickness |
| 基金项目:农业农村部热带作物种质资源保护项目（151721301354052014）；农业农村部热作技术试验示范项
目（15162130106232006）；农业农村部农业野生植物资源保护项目（1251416305010） |
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| 中文摘要: |
| 为进一步评价早期引种到广东深圳、东莞、茂名、化州、湛江和雷州6个地区（居群）的油
棕（Elaeis guineensis Jacq.）大树的低温适应能力，以其中38株油棕为对象，对其叶片解剖结构和低温半致
死温度（LT50）进行观测，并比较分析植株和居群的叶片解剖结构特征与LT50的相关性及影响油棕抗寒力
的主要因素。结果表明，油棕叶片解剖结构特征和LT50存在显著的植株间和居群间（中脉维管束长度和细
胞结构疏松度除外）差异；油棕植株的叶片中脉维管束宽度以及油棕居群的叶片上角质层厚度、下内皮层
厚度、下表皮层厚度、中脉维管束长度和宽度与其他解剖结构之间无显著相关性；油棕植株和居群的叶片
解剖结构与LT50之间均无显著相关性；油棕居群的叶片上角质层厚度和植株的叶片海绵组织厚度对LT50分
别具有最大的正、负直接影响。 |
| 英文摘要: |
| In order to further evaluate effects of leaf anatomical features on cold resistance of oil palm (Elaeis
guineensis Jacq.) earlier introduced in six regions (populations) in Guangdong Province, i.e. Shenzhen, Dongguan,
Maoming, Huazhou, Zhangjiang and Leizhou. Thirty eight individual palms were used for observation of leaf
anatomical features and semi-lethal temperature (LT50) and the relationship between leaf anatomical feathers and LT50
and the main factors affecting the cold resistance of oil palm in individual palms and populations were compared and
analyzed with the methods of variation, phenotypic correlation and path coefficient. The results showed that there was
significant difference in leaf anatomical structure and LT50 in individual palms and populations, but not significant in the length of vascular bundle and cell tense ratio in oil palm populations. The width of vascular bundle in individuals
and the thickness of adaxial cuticle, the thickness of abaxial hypodermis, the thickness of abaxial epidermis, the
length and the width of vascular bundle in populations were not significantly correlated with other features, and that
all of features had no significant correlation with LT50 whether in individuals or in populations. The spongy mesophyII
thickness in individuals was the determinant of LT50 with the highest negative direct effect, but the thickness of adaxial
cuticle was most important factor with the highest positive direct effect on LT50. |
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