|Title:||水稻粒型之遺傳研究||Other Titles:||Studies on the Inheritance of Grain Shape of Rice||Authors:||張德梅
|Issue Date:||2-Mar-1974||Publisher:||農業試驗所||Journal Volume:||23||Journal Issue:||1||Start page/Pages:||9-15||Source:||農業研究||Abstract:||
The present paper deals with the inheritance of grain shape, as well as the genetic correlation between grain shape and other yield component characters so as to obtain basic information for breeding long-or medium-long grains in the japonica varieties of rice. A strain, 7815, with large grains was crossed to two medium grain strains, C2180 and H106, and their F2 and F3 populations were studied.
Various characters such as the number of panicles, length of panicle, weight of 100 grains, and length, width and thickness of grain were recorded and the data were analyzed to estimate heritability and genetic correlation.
The segregation pattern of grain length, width, thickness and volume as well as the other yield component characters were. more or less the same in the F2, F3 populations. It was found all characters showed normal distribution, without a clear-cut dividing point.
The grain thickness, grain volume and panicle number heritability values were higher in F3 than in F2, whereas the other characters and values were usually higher in F2 than F3.
The phenotypic and genotypic correlations between grain volume and plant height, 100 grain weight were highly significant. In general, the higher plants produce longer and heavier grains, and the dwarf ones usually have short, round and smaller grains, with more hut shorter panicles. In another experiment, the auther found that there was a positive correlation between plant height and 100 grain weight. Futher study is needed to breed an ideal variety of dwarf stature with more panicle and long grain.
|Appears in Collections:||1.台灣農業研究(1950～迄今)|
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