Morphology and inheritance of dwarfism in common buckwheat line, G410, andits stability under different growth conditions

Citation
M. Minami et al., Morphology and inheritance of dwarfism in common buckwheat line, G410, andits stability under different growth conditions, BREED SCI, 49(1), 1999, pp. 27-32
Citations number
25
Categorie Soggetti
Plant Sciences
Journal title
BREEDING SCIENCE
ISSN journal
05363683 → ACNP
Volume
49
Issue
1
Year of publication
1999
Pages
27 - 32
Database
ISI
SICI code
0536-3683(199903)49:1<27:MAIODI>2.0.ZU;2-V
Abstract
The morphological characters of a dwarf common buckwheat line, G410, its dw arf stability under different growth conditions and mode of inheritance wer e investigated. Dwarfism of G410 is the result of reduction in length in th e first four internodes, especially in the second- and the third internodes from the soil. The other internodes and organs were not reduced in size. T herefore, G410 shows the brachysm type dwarfism, which is valuable for both root lodging - and stem lodging resistance. Although buckwheat is sensitiv e to growth conditions and its stem elongates longer under long day or high nitrogen conditions, the morphological characters of G410 were unaffected by seeding date, planting density and nitrogen conditions. F-1 plants of G4 10 crossed with a normal variety, Botan-soba, appeared intermediate and seg regation ratios in the F-2 and BC1F1 generations fitted a single gene model . Therefore, dwarfism of G410 was controlled by a single incompletely domin ant gene, probably which is a new gene because all dwarfing genes reported previously are recessive. Under this inheritance system it is possible to d istinguish genotypes by phenotype and to select dwarf homozygotes. These re sults indicate that G410 is a material worth further investigation for bree ding lodging resistance in common buckwheat.