論文

査読有り
1992年9月

BASIC VEGETATIVE GROWTH AND PHOTOPERIOD SENSITIVITY OF HEADING-TIME MUTANTS INDUCED IN RICE

JAPANESE JOURNAL OF BREEDING
  • T TANISAKA
  • ,
  • H INOUE
  • ,
  • S UOZU
  • ,
  • H YAMAGATA

42
3
開始ページ
657
終了ページ
668
記述言語
日本語
掲載種別
研究論文(学術雑誌)
DOI
10.1270/jsbbs1951.42.657
出版者・発行元
JAPANESE SOC BREEDING

Out of a large number of heading-time mutants artificially induced from a rice variety Gimbozu, 83 mutants covering the heading dates from 3 weeks earlier to 2 weeks later than the original variety, were selected without a biased distribution of heading time. These mutants were grown together with the original variety and 32 important Japanese varieties in two kinds of artificially controlled environments, a high-temperature (30-degrees-C).short-day-length (10h) and a high-temperature (30-degrees-C).long-day-length (14h): their basic vegetative growth (BVG), which was expressed by the days to heading under 30-degrees-C.10h, and photoperiod sensitivity (PS), which was expressed by the difference between the days to heading under 30-degrees-C.14h and that under 30-degrees-C.10h, were estimated. The estimated BVG and PS were then analyzed for their genetic variations and their relationships with the heading time under the natural conditions in a paddy field in Kyoto (N.L. 35-degrees-01').
The extremely-early-heading varieties cultivated in Hokkaido showed small BVG and small PS, the early-heading varieties mainly cultivated in Tohoku and Hokuriku districts generally showed large BVG and small PS, and the intermediate- or late-heading varieties cultivated in the region from Kanto to Kyushu districts showed small BVG and large PS (Table 1, Fig. 2).
The mutant population showed larger variations in the both of BVG and PS than the variety population (Table 1, Fig. 2). Early-heading mutants exhibited smaller PS than late-heading ones, though this tendency was not so remarkable as observed in the variety population (Table 1, Fig. 2). Of the 9 types of mutation which are expected from all the possible combinations of the directions of mutations induced in BVG and PS, 8 types were detected. It was revealed that the mutations of BVG occurred a little more in the plus direction than in the minus direction, while the mutations of PS did much more in the minus direction than in the plus direction (Table 2).
The experimental results indicate that the induced heading-time mutations in such a great variety are ascribable to the various combinations of the mutations induced in BVG and PS, and that the mutations toward large BVG or small PS are rather easily induced from a variety with small BVG and large PS such as Gimbozu, the original variety with the mutants used in this experiment. The results suggest that induced heading-time mutants can successfully be utilized not only for the improvement of heading time but also for the elucidation of genetic mechanism of heading-traits.

リンク情報
DOI
https://doi.org/10.1270/jsbbs1951.42.657
J-GLOBAL
https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902039349795642
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:A1992JT68000018&DestApp=WOS_CPL
ID情報
  • DOI : 10.1270/jsbbs1951.42.657
  • ISSN : 0536-3683
  • J-Global ID : 200902039349795642
  • Web of Science ID : WOS:A1992JT68000018

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