| 摘要: |
| 大豆籽粒发育可分为鼓粒期和籽粒归圆期，探究无损伤检测鼓粒进程的指标对大豆相关研究具有重要意义。本研究以青鲜819-4、冀豆17、鲁96150和V94-3971为试验材料，通过分期播种、连续测定标记花荚的荚果厚度，分期收获同日标记的大豆籽粒并进行发芽率测定，研究大豆鼓粒期荚果厚度变化。结果表明：1）鼓粒期鲜荚皮厚度基本保持恒定，因此荚果厚度可用于度量籽粒厚度的变化。荚果厚度（y）与开花后日数（x）的关系可以用二次函数（y=ax2+bx+c）进行有效模拟。利用模拟函数可以对大豆鼓粒始期、最大荚果厚度出现期、鼓粒持续期以及平均鼓粒速率等进行有效预测。荚果最大厚度可用作判定大豆籽粒开始具备发芽能力的外观指标。2）荚果厚度变化受材料特性和外界环境的共同影响。同一材料不同时期标记的花荚，荚果厚度增速趋势可能有差异，因此在大豆籽粒灌浆特性研究中，同日标记花荚是籽粒灌浆特性研究中一项必要的控制措施。3）不同材料鼓粒特性存在差异，选择鼓粒启动早、鼓粒速度快的大豆品种是可行的。荚果厚度有望成为研究大豆灌浆特性和适时早收的无损伤选择指标。 |
| 关键词: 大豆 荚果厚度 籽粒发芽 量化模拟 |
| DOI：10.11841/j.issn.1007-4333.2014.01.04 |
| 投稿时间：2013-04-25 |
| 基金项目:西北农林科技大学唐仲英育种专项（A212020921）；西北农林科技大学基本科研专项（Z109021004） |
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| Seed-bulging simulation with pod thickness in soybean(Glycine max (L.) Merri.) |
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LI De-xiao, WANG Jing, LIU Xiu-jie, HU Chao, LIU Yi
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| (College of Agronomy, Northwest A&F University, Yangling 712100, China) |
| Abstract: |
| Seed development can be divided as seed-bulging stage and seed-shrinking stage in soybean (Glycine max (L.) Merri.).Detection of non-destruction index is important for studying the soybean seed-filling process.The experiment was performed by continuous measuring the thickness of the marked soybean pods,harvesting one-day-bloomed pods successively at the late stage of seed-bulging and determining the germination rate,with four materials of Qingxian 819-4,Jidou 17,Lu 96150 and V94-3971 sowed at two dates.The results showed that (i) Pod wall thickness was constant during the seed-filling process,so changes of pod thickness indicated the variance of seed thickness.The relationship between pod thickness and days after bloom was effectively simulated with a quatratic function (y=ax2+bx+c),based on which,initiation point,final point (maximum pod thickness appeared)and duration of seed-bulging,as well as average pod thickening rate were predicted effectively.The maximum pod thickness would be served as an indicator of seed germination initiation.(ii) Pod thickness jointly affected by material characteristics and environmental conditions.Pod thickening rate was different between the two flowering pods in the same materials.So marking flowers is necessary to control the environmental effect in the study of seed-filling.(iii) Seed-bulging characteristics varied among the different materials,and it was possible to select soybean with early and fast seed-bulging characters.Thus,pod thickness can be served as a non-destruction index for soybean seed-filling study and early harvesting date determination. |
| Key words: soybean (Glycine max (L.) Merri.) pod thickness seed germination quantitative simulation |
