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Studies on the Limit of Possibility of the Increase in Number of Leaves and Grains of the Main Stem of Rice Varieties.

Bulletin of the Faculty of Agriculture, Yamaguchi University Volume 7 Page 349-354
published_at 1956
Title
水稲品種の主稈葉数並びに籾数の増加可能限界に関する研究
Studies on the Limit of Possibility of the Increase in Number of Leaves and Grains of the Main Stem of Rice Varieties.
Creators Yamagata Makoto
Source Identifiers
Creator Keywords
水稲品種 主稈葉数 籾数 増加可能限界
1.The influence of temperature and day-length during the nursery period on the heading time and the numter of leaves of the main stem was investigated with 16 varieties of rice in order to study on the relation of the number ofleaves of the main stem with tbe limit of possibility of the increase of the crop. During the nursery period(34 days)the materials were kept at a hightemperature or at a low temperature at night under the short day treatment. 2.In the case of early varieties such as ”Hayasio”,”Eiko”or “Tomoe-masari”(remarkably sensible to high temperature and dull to short day-length),the premature heading occurred at the main stem under the condition of naturaltemperature or high temperature at night showing the decrease in number ofleaves of the main stem, and the delay of the heading occurred under a low temperature condition at night showing the increase in number of leaves of the main stem. 3.The incompetency of heading of the main stem occurred in ”Norin No・22” and‘‘Norin N0.37” under the condition of high temperature at night and short day-length.These middle-season varieties are dull to high temperature and remarkably sensible to short day-length. 4.1n the case of other varieties,no remarkable variation of heading time and in number of leaves of the main stem occurred under various conditions of temperature and day-length so far as the present experiment concerned.
Subjects
農学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学農学部
Date Issued 1956
File Version Not Applicable (or Unknown)
Access Rights metadata only access
Relations
[ISSN]0513-1715
[NCID]AN00244250
Schools 農学部