A few cases about the variation of main characteristics in rice [Oryza sativa] plants
2002
"Tanaka, M. (Hyogo-ken. Agricultural Inst., Kasai (Japan)) | Sawada, T. | Ikegami, M. | Yoshikawa, T. "
"The following two studies were carried out to analyze the stable seed production for breeder's stocks in rice. (1) In 1999, the rice variety ""Harimamochi"" was planted in a breeder's stock farm. Since it did not show uniformity of heading, the progeny test was performed in the following year. Although the lines with longer heading period in 1999 had a tendency to show a higher coefficient of variation on morphological characteristics, the heading period in 2000 was not practically different between the lines. (2) Several morphological characteristics of 10 rice varieties were examined in normal and late planting conditions. Generally, the plant growth was better in normal conditions, however, the grain-straw ratio was higher in the late planting conditions. As a result, the yield was almost the same in the two conditions, except for a few non-lodging resistant varieties."
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