開花期の追肥と登熟期の環境条件が異なる形状の ダイズ裂皮粒発生に及ぼす影響

日本作物学会紀事

津島 洋¹  平井 儀彦¹  津田 誠¹ 

[1] 岡山大学大学院自然科学研究科農学系

关键词: High temperature;    高温;    Irregular-type seed coat cracking;    不定形裂皮;    Line-type seed coat cracking;    線形裂皮;    Seed coat cracking;    裂皮粒;    Silicon;    ケイ酸;    Soybean;    ダイズ;   

DOI  :  10.1626/jcs.80.183

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The effects of fertilization at the flowering stage, soil moisture and high temperature during the seed-filling stage on seed coat cracking of different types in soybean were investigated. For topdressing, calcium, silicon or NPK was applied at the flowering stage. For temperature and moisture, period from 14 September to 24 October was divided into 4 periods of 10 days in each treatments, the plants were exposed to 3-4°C higher temperature (H1-H4), dried soil (D1-D4) or wet soil (W1-W4) during each period. The cracked seeds increased in H2 and H3, meaning that the seeds are easily cracked by high temperature at R6 to R7 stages. The cracked seeds of irregular type increased in each of H2, H3 and H4 irrespective of seed size. The frequency of cracked seeds of line type was high in large seeds treated with silicon, but the seed weight was not affected by silicon treatment. The effect of dried soil on cracking was low, while W1 and W2 tended to decrease the frequency of cracked seeds and W2 decreased the cracked seeds of irregular type. It was concluded that the effects of environmental condition on cracking vary with the type of cracking, and the physiological mechanism of cracking may vary with the cracking type.

【 授权许可】

Unknown