Morphology of semi-dwarf common buckwheat G410 and its response to growth conditions

Minami¹, M., A. Ujihara¹ and C. Campbell²

¹ Faculty of Agriculture, Shinshu University, Minamiminowa, Nagano 399-4598, Japan ² Kade Research Ltd., Morden, Manitoba, Canada R6M 1E9

Minami, M., A. Ujihara and C. Campbell. 1998. Morphology of semi-dwarf common buckwheat AG410" and its response to growth conditions. Advances in Buckwheat Research. Seventh International Symposium on Buckwheat, Winnipeg, Manitoba Aug. 12-14. University of Manitoba Press. pp. I: 285-292.

Abstract: To evluate a semi-dwarf common buckwheat line, G410, as breeding material for lodging resistance, morphological characters of G410 and its responce to different growth conditions were investigated. Semi-dwarfness of G410 resulted from reduction of length in the first four internodes, especially in the second and third internode from the soil. The size of the other internodes and organs were not different from normal varieties. Therefore, dwarfness of G410 is brachysm type, which is valuable for both root lodging and stem lodging resistance. Though buckwheat is sensitive to growth cnditions and its stem elongates more under long days or high nitrogen application, morphological character of g410 was stable under different seeding time (day length), planting density and nitrogen fertilizer application. From these results we concluded that G410 was useful as material for the breeding of lodging resistance in common buckwheat.

Key words: Fagopyrum esculentum, dwarfness, lodging resistance, morphology, stability