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題名 | 水稻穀粒充實速率與藁重減少速率之研究 |
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作者 | 劉村明; | 書刊名 | 中華農學會報 |
卷期 | 142 1988.06[民77.06] |
頁次 | 頁58-66 |
分類號 | 434.111 |
關鍵詞 | 水稻; 充實; 藁重; 速率; 穀粒; 減少; |
語文 | 中文(Chinese) |
中文摘要 | 1. 稻殼粒充實速率在充實初期速度緩慢,但在充實盛期則相當快速。充實盛期之穗重累積量佑收穫時最後穗重之比值,在參試品種中除?稻品種南5號、臺南6號、高雄140號在50%以下外,其餘品種均在50-75%左右。充實後期穗重之增加速度則趨緩。 2. 稻殼粒充實盛期之日數,?稻品種比秈稻品種稍長,但秈稻品種之充實速率大都較?稻品種高。 3. 收穫時最後穗重與充實盛期之穗重增加速率、?稻及秈稻品種均呈極顯著之正相關。 4.充實盛期之穗重增加速率與同期之葉重減少速率、?稻及秈稻品種均呈不顯著之正相關,但品種間有相當大之差異。粒型較大之品種(臺北309號、嘉農242號、嘉農秈育10號、高雄秈7號BG35-2、HB 269、stripe 638、7859)在同樣水準之?重減少速率下,其穗重增加速率比粒型小者快。 |
英文摘要 | 1. This study showed that rice grain fills slowly at early filling stage but rapidly, at maximum filling stage. The contribution of dry weight to final ear weight was 50 to 75% in most of Japonica varieties and all Indica Varieties during maximum filling stage, other Japonica varieties showed smaller contribution of less than 50%. 2. The duration of maximum filling stage of Japnica Varieties was longer than Indica Varieties. However, the increasing rate of ear weight at maximum filling stage in Indica Varieties was higher than Japonica Varieties. 3. The correlation between final ear weight and increasing rate of ear weight at maximum filing state was positive and highly significant for both Japonica and Indica Varieties. 4. Positive but nonsignificant correlation was found between increasing rate of ear weight and decreasing rate of straw weight at maximum filling stage. Significant difference was found among varieties in increasing rate of ear weight. Ear weight of large grain varieties (Taipei 309, Chianung 242, Chianung sen 10. Kaohsiung sen 7, BG35-2k, HB269, stripe 638, 78590 treneded to increase more rapidly than that of small grain varieties at the same level of decreasing rate of straw weight. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。