|Title:||Influence of Spacing on Heritability and Interrelationships among Agronomic Traits in the F2 Population of a Rice Cross||Other Titles:||栽植密度影響水稻什交第二代後裔主要農藝性狀遺傳力及相關之研究||Authors:||W.L. Chang
|Issue Date:||2-Jun-1967||Publisher:||農業試驗所||Journal Volume:||16||Journal Issue:||2||Start page/Pages:||14-21||Source:||農業研究||Abstract:||
Eight agronomic traits of a rice cross, Tainae 3 × Pi No. 4, were studied in in the F2 population in the second crop of 1965 to 3 spacings, i.e., wide, standard, and close spacings with distance between rows and hills of 25 × 40, 25 × 20, and 25 × 10, respectively. Data for all traits were obtained on individual plants randomly selected.
Close spacing caused a drastic decrease in panicles and grain yield per plant whereas plant height, panicle weight, and grains per panicle decreased very slightly. Heading date and weight of 100-grain were practically not affected by spacing.
Estimates of heritability for panicles and grain yield per plant were low largely due to the low genotypic variance of F2 population. Heritabilities for other traits were in general higher. Heritability estimates for traits in wide and standard spacings were larger than those in close spacing.
Grain yield per plant was closely associated with panicles per plant and plant height in close spacing, and with grains per panicle, panicle weight, and panicle length in wide and standard spacing.
水稻品種臺南3號，Pi No 4及其雜交第二代後裔分別種植於三種不同栽植密度即疏植（行株距25×40公分），標準植（行株距25×20公分）及密植（行株距25×10公分）並從各栽植密度隨機選取單株調查有關農藝性狀。
|Appears in Collections:||1.台灣農業研究(1950～迄今)|
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