开放式空气CO2浓度增高对水稻颖花分化和退化的影响

应用生态学报 ›› 2002, Vol. ›› Issue (10): 1215-1218.

开放式空气CO₂浓度增高对水稻颖花分化和退化的影响

杨洪建¹, 王余龙¹, 黄建晔¹, 董桂春¹, 朱建国², 杨连新¹, 单玉华¹

1. 扬州大学农业部作物栽培生理重点实验室, 扬州, 225009;
2. 中国科学院南京土壤研究所, 南京, 210008

收稿日期:2002-06-12 修回日期:2002-08-03 出版日期:2002-10-15
通讯作者: 王余龙
基金资助:
中国科学院知识创新重要方向项目(KZCX2408);国家自然科学基金重大国际合作研究资助项目(40120140817).

YANG Hongjian¹, WANG Yulong¹, HUANG Jianye¹, DONG Guichun¹, ZHU Jianguo², YANG Lianxin¹, SHAN Yuhua ¹

1. Key Laboratory of Crop Cultivation and Physiology, Ministry of Agriculture, Yangzhou University, Yangzhou 225009;
2. Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008

Received:2002-06-12 Revised:2002-08-03 Online:2002-10-15

摘要/Abstract

摘要： 在大田栽培条件下,研究开放式空气CO₂浓度增加(FACE)200μmol·mol^-1的处理对水稻每穗1、2次枝梗及其颖花的分化数、退化数、现存数及退化率的影响.结果表明,FACE处理对每穗1、2次枝梗的分化数及1次枝梗的退化数、退化率均无显著影响,但使2次枝梗的退化数、退化率显著提高,使2次枝梗现存数明显减少;FACE处理对每穗1、2次颖花的分化数和1次颖花的退化数、现存数、退化率均无显著影响,但使每穗2次颖花的退化数和退化率显著提高;FACE处理使每穗颖花现存数显著减少主要是因为FACE处理使现存1次枝梗上2次枝梗大量退化引起2次颖花退化所致;FACE处理使1次颖花现存数占全穗的比率显著增加,使2次颖花现存数占全穗的比率显著降低.

Abstract: Effect of Free-Air CO₂ Enrichment (FACE), 200μmol·mol^-1 CO₂ elevation under field condition, on the number of differentiated, retrograded, and survived primary and secondary branches and their spikelets in rice was investigated, and the percentage of retrograded branches and spikelets under FACEtreatment were also calculated. Results showed that the number of differentiated primary and secondary branches, the number and percentage of retrograded primary branches per panicle were not significantly affected by FACE, but the number and percentage of retrograded secondary branches per panicle significantly increased under FACEtreatment, which resulted in the significant decrease of survived secondary banches. FACEhad no significant effect on the number of differentiated, retrograded and survived spikelets on the primary branches per panicle. The number of differentiated spikelets on secondary branches per panicle was not significantly affected by FACE, but FACEtreatment significantly increased the number and percentage of retrograded spikelets on the secondary branches per panicle. Significant decrease of survived spikelets per panicle under FACEtreatment was chiefly caused by marked increase of retrograded spikelets on the secondary branches of survived primary branches. FACEtreatment significantly increased the surviving percentage of spikelets on the primary branches per panicle, while that on the secondary branches significantly decreased under FACEtreatment.

中图分类号:

S511
S365

杨洪建, 王余龙, 黄建晔, 董桂春, 朱建国, 杨连新, 单玉华. 开放式空气CO₂浓度增高对水稻颖花分化和退化的影响[J]. 应用生态学报, 2002, (10): 1215-1218.

YANG Hongjian, WANG Yulong, HUANG Jianye, DONG Guichun, ZHU Jianguo, YANG Lianxin, SHAN Yuhua . [J]. Chinese Journal of Applied Ecology, 2002, (10): 1215-1218.

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开放式空气CO₂浓度增高对水稻颖花分化和退化的影响

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