水稻品種穗頸節間大維管束數目與穗分枝結構型態間關係之研究

Studies on Relationship between the Branching Structure of Panicle and Large Vascular Bundle Number of Panicle Neck Internode in Rice

顏吉甫(Chi-Fuu Yein)

《作物、環境與生物資訊》 1卷1期 (2004/03) Pp. 2-6

https://doi.org/10.30061/CEB.200403.0002

摘要

本試驗種植秈、稉稻品種，探討水稻穗頸節間大維管束數目與穗分枝結構型態間之關係。結果顯示，參試品種穗頸節間大維管束數目，秈稻品種比稉稻品種多。水稻植體穗頸節間大維管束數目及面積與一穗穎花數及穗重間關係呈正相關，又試驗結果顯示，增加穗頸節間大維管束數目及面積，皆可增加一穗穎花數，遂增進穗重性狀表現。但是穗軸上之三次枝梗數增加，則參試品種米粒外觀顯現腹白現象；反之，減少三次枝梗數，有助于改善米質。

關鍵字

水稻 ； 穗頸節間大維管束 ； 穗分枝結構

並列摘要

This study explored the relationship between the large vascular bundle number of panicle neck internode and the branching structure of panicles. Experiment material contained Japonica and Indica rice cultivars with different grain appearances. The large vascular bundle number of panicle neck internode was higher in Indica cultivars than in Japonica cultivars. There was a significant positive correlation between and number of large vascular bundles in panicle neck internode and panicle weight and spikelet number per panicle. As a result, the data indicate that an increase of the number and area of panicle vascular bundle may benefit the increase of panicle spikelet number and panicle weight. However, the increase of tertiary vascular branch number could enhance the appearance of the trait of white-belly. Thus, milling quality may be improved by reducing tertiary number.

並列關鍵字

Rice ； Large vascular bundle of panicle neck internode ； Branching structure of panicle