南方鲜食枣2种类型枣吊光合产物积累能力的比较

doi:10.11707/j.1001-7488.20140612

摘要/Abstract

摘要：

以南方鲜食枣品种中秋酥脆枣的2种类型枣吊为试材，对木质化枣吊和非木质化枣吊叶片的生长期、叶面积、光合效率进行研究。结果表明：1）木质化枣吊生长期明显比非木质化枣吊生长期长；2）木质化枣吊叶片叶面积显著大于非木质化枣吊叶面积；3）木质化枣吊叶片净光合速率大于非木质化枣吊叶片，而且在强光下仍可保持较高的光合效率；4）木质化枣吊叶片栅栏组织细胞密集度大于非木质化枣吊叶片，且木质化枣吊茎的输导组织较非木质化枣吊发达；5）木质化枣吊叶片叶绿素a和叶绿素b的比值明显大于非木质化枣吊的叶绿素a和叶绿素b的比值。综合分析认为，木质化枣吊与非木质化枣吊相比，在生长期、叶面积、光合效率3个方面具有优势，这些特点最终决定其拥有较高的光合产物积累能力。

关键词: 枣, 枣吊, 组织解剖结构, 光合效率

Abstract:

In this paper, a southern fresh jujube, Zhongqiusucui, used in a comparative study on the growth period, leaf area and photosynthetic efficiency of lignified bearing shoot and non-lignified bearing shoot. The results showed that: 1) The growth period of lignified bearing shoot was longer than that of non-lignified bearing shoot. 2) The leaf area of lignified bearing shoot was significantly larger than that of non-lignified bearing shoot. 3) The net photosynthetic rate of lignified persistent bearing was higher than that of non-lignified bearing shoot. Under the strong light condition, lignified bearing shoot still maintained high photosynthetic rate. 4) Anatomy showed that the cell density of the palisade tissues of lignified bearing shoot was greater, and the conducting tissue of stem was stronger than that of non-lignified bearing shoot. 5) The chlorophyll a/b ratio of lignified bearing shoot was significantly greater than that of non-lignified bearing shoot. By comprehensive analysis on the comparison between lignified bearing shoot and non-lignified bearing shoot, the lignified bearing shoot had advantages in growth period, leaf area and photosynthetic efficiency, all of which indicate the lignified bearing shoot should have higher accumulation ability of photosynthetic product.

Key words: jujube, bearing shoot, tissue anatomical structure, photosynthetic efficiency

中图分类号:

S718.43

王森, 晏巢. 南方鲜食枣2种类型枣吊光合产物积累能力的比较[J]. 林业科学, 2014, 50(6): 90-97.

Wang Sen, Yan Chao. Comparison of the Accumulation Ability of Photosynthetic Product between Two Types of Bearing Shoots of Southern China Fresh-Eat Jujube[J]. Scientia Silvae Sinicae, 2014, 50(6): 90-97.

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