华北农学报Issue(3)：136-141,6.
CO2浓度增高对北方水稻籽粒灌浆特性的影响
Effect of CO2 Enrichment on Rice Grain Filling under FACE System in North China
摘要
Abstract
Effects of elevated (600μmol/mol) CO2 concentration on grain-filling characteristics of different ja-ponica rice cultivars were investigated using Songjing 9 and Daohuaxiang 2 by mini FACE ( Free air CO2 enrich-ment) experimental platform. In blossom,we Chose 100 stalks and put a notice plate with date on each one. From five days after blossom,each treatment was randomly taken 5 to 8 tassels,sampling time in the morning 10-12,a total of five times. After sampling 105 ℃ heating 30 min,then 70 ℃ drying to constant weight,get rid of the empty grain and ill grain,select 200 grains′weight converted into thousand-grain weight. Using the logistic equation for the filling process of dynamic fitting analysis. The results showed that the maximum and average grain-filling rate of Songjing 9 was increased by 18% and 17. 6% under mini FACE. The duration of early grain-filling of Songjing 9 was prolonged for 0. 88 d,while the duration of total grain-filling was shortened by 2. 60 d under mini FACE. The day of maximum grain-filling rate of Daohuaxiang 2 was delayed for 4. 27 d,and the maximum and average grain-filling rate was decreased by 6. 8% and 7. 7%. The duration of early,middle and late grain-filling was prolonged for 2. 45,3. 63,2. 56 d. The results indicated that grain-filling characteristics of different rice varieties respond to ele-vated CO2 concentration difference. The filling rate of Songjing 9 will be quickly and the filling stage of Daohuaxiang 2 will be longer. The results of the study can improve and genetic improvement of rice cultivation measures to pro-vide certain theory reference and practice basis.关键词
大气CO2 富集系统/水稻/灌浆特性/CO2 浓度增高Key words
FACE/Rice/Grain filling properties/CO2 enrichment分类
农业科技引用本文复制引用
姜乐,赵洪亮,谢立勇,王惠贞,冯永祥..CO2浓度增高对北方水稻籽粒灌浆特性的影响[J].华北农学报,2014,(3):136-141,6.基金项目
国家自然科学基金项目(41175097) （41175097）
