Tiller Development of Winter Type Wheat Iwainodaichi Sown Early in the Southwestern Part of Japan (Agronomy)

Japanese Journal of Crop Science

Osamu KUSUDA¹  Akira FUKUSHIMA¹  Masami FURUHATA¹ 

关键词: Early sowing;    秋播性;    Leaf emergence rate;    コムギ;    Non-productive tiller;    出葉速度;    Tiller;    早播き;    Wheat;    分げつ;    Winter type;    ç©‚æ•°;    無効分げつ;   

DOI  :  10.1626/jcs.70.173

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Winter-type wheat, which isn't injured by frost because the stem elongation begins late, is considered appropriate for early sowing and early harvesting in southwestern Japan. The aim of this study is to elucidate the developmental pattern of tiller in the winter type wheat sown early. Winter type wheat Iwainodaichi and Spring type wheat Chikugoizumi were sown on 5 October (very early sowing), 5 December (early sowing), and 24 December (standard sowing) in 1998. Although the maximum number of tillers per area was greater in Iwainodaichi than in Chikugoizumi at every sowing time, the number of spikes per area was not greatly different between cultivars. Tillers emerged regularly as the leaves of main shoot emerged successively. The emergence rate of higher order and position's tillers was larger in Iwainodaichi, though most of those tillers became non-productive tillers. The rate of leaf emergence of productive tillers was almost equal to that of the main shoot. On the other hand, that of non-productive tillers became lower gradually and stopped. Based on these rules, the change of the number of tillers per individual was investigated. As a result, the time of the maximum number of tillers per individual of Iwainodaichi in early sowing was later than that of Chikugoizumi and earlier than that of Iwainodaichi and Chikugoizumi in standard sowing. These changes of the number of tillers per individual seemed to be affected by the timing of spike development.

【 授权许可】

Unknown