秈稻穀粒大小與產量構成要素及白堊質之相關

The Relationship among Grain Size, Yield Components and Grain Chalkiness in Indica Rice

林再發(Tsay-Fa Lin)

《臺中區農業改良場研究彙報》 48期 (1995/09) Pp. 17-24

https://doi.org/10.6956/BTDAIS.199509.0017

摘要

本研究選取不同榖粒大小之12個秈稻品種（系）為試驗材料，以探討榖粒大小與產量構要素及米質之關係。經產量變方分析結果，穀粒大小與產量相關不顯著，即榖粒千粒重在29 g到30 g末能比一般秈稻品種（系）增加產量。此係由於大粒種品系之穗數或一穗粒數或稔實率等之產量構成因素減少所致，由產量與產量構成要素之路徑分析結果僅以稔實率對產量影響達到顯著水準。第一期作各性狀之相關係數中以榖粒粒寬與糙米率及白米率呈顯著正相關，但千粒重與完整米率呈顯著負相關，粒寬、粒厚及千粒重與腹白等級呈極顯著負相關。

關鍵字

秈稻 ； 榖粒 ； 產量構成要素 ； 白堊質

並列摘要

Twelve Indica rice varieties/lines were used for studying the relationship among the grain size, grain yield components and quality both in the first and second rice crops. According to variance analysis, the varieties with different sizes of grain were not correlated with the grain yield significantly. The grain yield of the varieties with bigger grain size (ab. 29-30 grains/1000 grains) was not necessary higher than those varieties with smaller grain size, due to the former having lower panicle number per hill, grains per panicle or percentage of filled grain. The percentage of filled grains showed the most important factor to affect the grain yield. On the other hand, it was shown that the grain width was significantly positive correlated with the rate of brown rice and total milled rice, while thousand grain weight was negatively correlated with the rate of head rice. Grain width, grain thickness, and thousand grain weight was negative correlated with the degree of white belly. This result indicated that the grain quality of Indica rice declined in increase of grain size.

並列關鍵字

Indica rice ； grain ； yield components ； grain chalkiness