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首页> 外文期刊>日本作物學會紀事 >Studies on the Characters of the Improved Semi-Dwarf, High-Yielding Indica Rice Varieties : II. Shape and quality of rice kernel, especially occurrence of white belly kernel
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Studies on the Characters of the Improved Semi-Dwarf, High-Yielding Indica Rice Varieties : II. Shape and quality of rice kernel, especially occurrence of white belly kernel

机译：改进半矮化，高产籼稻品种特征的研究：II。水稻内核的形状和质量，尤其是白腹部核的发生

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摘要

We conducted this work to get the informations about the shape and quality of rice kernel in the improved indica varieties, comparing with the japonica varieties. The results obtained are as follows: 1. In all varieties, a high positive correlation (r=0.9065) was found between the hull weight and the length × width of the kernel. 2. In all varieties, there was no correlation between the hull weight and the thickness of the kernel, but the varieties, which had bigger hulls, had a greater thickness in the kernel in the japonica varieties. On the other hand, the varieties which had bigger hulls and whose kernel's length × width were over 16 mm2, had a smaller thickness in the kernel in the improved indica varieties. 3. Varietal differences of the increase in the grain weight were observed. Among the early varieties, the increase in the grain weight stopped more rapidly in Chosaeng Tongil which belongs to the improved indica variety than in Gohyakumangoku and Reimei which belong to the japonica variety. 4. White belly kernels occured more in the very early varieties and the improved indica varieties except SML 680 2/1 which is long slender kernel. At the heading stage, they had a much smaller leaf area per spikelet than the other japonica varieties. 5. In the japonica varieties, Gohyakumangoku Llnd Jinheung had a much bigger hull than the other japonica varieties (almost the same with IR-8, Chosaeng Tongil, SML 680 2/1, Namking 11, which belong to the improved indica variety.) and their grain weight were much larger than the improved indica varieties. But the percentage of the occurrence of white belly kernel was much lower in these than in the improved indica varieties. At the heading stage, they had 1.2 to 2.2 times larger leaf area per spikelet than the improved indica varieties. 6. A long slender kernel variety SML 680 2/1 produced 18.8% of white belly kernel, though the percentage was much smaller than that of the other indica varieties. 7. The opaque part of the white belly kernel was small in the very early varieties which had a small hull, and very large in the improved indica varieties which had a large hull.
机译：我们开展了这项工作，以获得有关改进的籼稻品种中水稻内核的形状和质量的信息，与粳稻品种相比。所获得的结果如下：1。在所有品种中，在船体重量和内核的长度×宽度之间发现了高正相关（R = 0.9065）。 2.在所有品种中，船体重量与核的厚度之间没有相关性，但具有更大的船体的品种在粳稻品种的核中具有更大的厚度。另一方面，具有更大船体的品种并且其内核长度×宽度超过16mm2，在改进的籼稻品种中的内核中具有较小的厚度。 3.观察到晶粒重量增加的变异差异。在早期的品种中，谷物体重的增加在Chosaeng汤内迅速停止，其属于属于粳稻品种的Goyakumangoku和Reimei的改善品种。白色腹部在早期的品种和改进的籼稻品种中发生了更多，除了SML 680 2/1，这是长纤细的内核。在标题阶段，它们每根尖头面积比其他粳稻品种更小。 5.在粳稻品种中，Goyakumangoku Llnd金锋比其他粳稻品种更大（与IR-8，Chosaeng Tongil，SML 680 2/1，Namking 11属于改进的籼稻品种）几乎相同。）它们的粒重远远大于改善的籼稻品种。但是，在改善的籼稻品种中，白腹部发生的发生的百分比远下降得多。在标题阶段，它们每穗叶面积比改善的籼稻品种叶面积大1.2至2.2倍。 6.长长细长的内核品种SML 680 2/1产生18.8％的白色腹部内核，但百分比远小于其他籼稻品种。 7.白色腹部内核的不透明部分在非常早期的品种中小，船体的早期品种，并且在具有大船体的改善的籼稻品种中非常大。

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