Differences in Productivity between Short-and Long-Culm Varieties and Their Relationships with Cell Wall and Cellular Components of Culm in Spring Wheat

Japanese Journal of Crop Science

Kanji GOTOH¹  Tadashi TAKAHASHI¹  Kimio NAKASEKO¹ 

关键词: Cell wall;    細胞内容物質;    Cellular contents;    細胞壁構成物質;    Harvest index;    子実収量;    Long culm;    収穫指数;    Seed yield;    全乾物重;    Short culm;    短稈;    Spring wheat;    長稈;    Total dry matter weight;    春播コムギ;   

DOI  :  10.1626/jcs.57.53

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Grain yield, total dry weight and harvest index of twelve and twenty-three wheat varieties, including short-and long-culm types, were measured in 1985 and 1986. In 1986, the percentages of cell wall and cellular components in the culm were also measured by the detergent method. Long-culm varieties had higher total dry weight, but lower harvest index than short-culm varieties in both years. The grain yields of long-culm varieties were, however, higher in 1985 (dry conditions), but lower in 1986 (wet conditions) than those of short-culm varieties. Grain yield was correlated positively with total dry weight in 1985, but with harvest index in 1986. The weight of cell wall constituents in the culm attained a maximum-just after anthesis and maintained a near maximum value until maturity in almost all varieties. The culm dry weight and the weight and percentage of cell wall constituents measured at the milk-ripe stage were larger in long-culm varieties than in short-culm ones, and correlated positively with total dry weight at maturity. On the other hand, the weight of cellular contents increased until the milk ripe stage and then decreased, suggesting that reserve materials stored in the culm may be translocated to the grain after the milk ripe stage. The percentage of cellular contents was about 10% higher in short-culm varieties than in long-culm ones at the milk ripe stage.

【 授权许可】

Unknown