Method for selection of soybeans tolerant to seed cracking under chilling temperatures.
Method for selection of soybeans tolerant to seed cracking under chilling temperatures.
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DOI：
10.1270/jsbbs.64.103
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发表时间：
2014-05
期刊：
影响因子：
2.4
通讯作者：
Senda M
中科院分区：
文献类型：
--
作者：
Yamaguchi N;Yamazaki H;Ohnishi S;Suzuki C;Hagihara S;Miyoshi T;Senda M
在日本北部的北海道，大豆 [Glycine max (L.) Merr.] 作物因寒冷天气而受损。寒冷的气温会导致大豆作物出现裂籽（CS），特别是在北海道东部和北部种植的大豆作物。 CS种皮背面严重裂开，子叶暴露且经常分离。 CS的发生导致生产不稳定，因为这些种子没有商品价值。然而，人们对 CS 现象知之甚少。本研究的目的是确定与 CS 发生相关的冷敏感阶段，并开发一种选择 CS 耐受品系的方法。首先，我们在田间试验中研究了开花后的低温温度与CS发生之间的关系。花后14～21天的平均温度与CS率呈负相关。其次，我们在田间试验中评估了大豆品种和育种系之间 CS 耐受性的差异。 『Toyohomare』和『Toiku-238』比『Yukihomare』和『Toyomusume』更具 CS 耐受性。第三，我们开发了一种选择方法，从开花后10天开始在植物培养箱中对植物进行21天的低温处理。这使得能够比较品种之间的 CS 耐受性。这种选择方法将有助于培育耐CS大豆。
In Hokkaido, northern Japan, soybean [Glycine max (L.) Merr.] crops are damaged by cold weather. Chilling temperatures result in the appearance of cracking seeds (CS) in soybean crops, especially those grown in eastern and northern Hokkaido. Seed coats of CS are severely split on the dorsal side, and the cotyledons are exposed and frequently separated. CS occurrence causes unstable production because these seeds have no commodity value. However, little is known about the CS phenomenon. The aims of this study were to identify the cold-sensitive stage associated with CS occurrence and to develop a method to select CS-tolerant lines. First, we examined the relationship between chilling temperatures after flowering and CS occurrence in field tests. The average temperature 14 to 21 days after flowering was negatively correlated with the rate of CS. Second, we evaluated differences in CS tolerance among soybean cultivars and breeding lines in field tests. ‘Toyohomare’ and ‘Toiku-238’ were more CS-tolerant than ‘Yukihomare’ and ‘Toyomusume’. Third, we developed a selection method in which plants were subjected to 21-day chilling-temperature treatment from 10 days after flowering in a phytotron. This enabled comparisons of CS tolerance among cultivars. This selection method will be useful for breeding CS-tolerant soybeans.
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影响因子：
2.4
作者：
Senda, Mineo;Nishimura, Satsuki;Kuroda, Tomohisa
通讯作者：
Kuroda, Tomohisa
影响因子：
2.3
作者：
Takahashi, R;Abe, J
通讯作者：
Abe, J
影响因子：
2.4
作者：
Kurosaki, H;Yumoto, S;Matsukawa, I
通讯作者：
Matsukawa, I
影响因子：
2.5
作者：
Kurosaki, H;Yumoto, S
通讯作者：
Yumoto, S
影响因子：
3.1
作者：
TAKAHASHI, R;ABE, J
通讯作者：
ABE, J