Studies on the soil-acidity resistance of wheat and barley plants.VI.Multiline composition of a native population in the wheat variety, 'Hiraki-Komugi'
| Autor: | Takashi Hanahusa, Ryoichi Ichihashi, Kanji Goto |
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| Rok vydání: | 1961 |
| Předmět: | |
| Zdroj: | Japanese Journal of Breeding. 11:220-224 |
| ISSN: | 2185-291X 0536-3683 |
| Popis: | "Hlraki-komugi" Is a local variety of wheat which is being cultivated widely in the acid soil areas distributed around Mt. Daisen, Tottori prefecture. This variety is well known, because of its high resistance to soil acidity, and it has been used as a valuable material for the breeding of varieties with high resistance to the soil-acidity. A native population of this variety was grown simultaniously at the Thaku Branch of Tottori Prefectural Agr. Exp. Sta., Kurayoshi and at the Natl. Inst. of Genetics, Misima. From the popula-tion, 49 plants were selected at random at Misima, and likewise, 36 plants were selected at Kurayo-shi. These two groups of lines were designated as A and B, respectively. Data may be summarized as follows: 1) These groups of lines were compared in both locations and data were analyzed statistically. As the result of which, the statistically significant differences were found between the lines in the almost of agronomic characters. 2) Lines examined were discriminated most effectively by three morphological characters, namely, culm length, ear length and awn length. Then, b ased on these data, type index of each line was calculated. Differences in type i, ndex value were statistically significant, while no interaction was found between years. 3)These lines were grown under the acid soil and the ordinal soil conditions, and data taken in each soil were compared in each pair of lines. Soilacidity resistance was different between lines, and difference was significant in both groups. Interac-tion betvJeen lines and soils showed significance, and it has suggested that the varietal differentia-tion for soil-acidity resistance could occur, if this population were grown under various soil conditions. Thus, a kind of edapic race of a crop variety should be orig:inated from such a population. 4) Based on these findings, it was concluded that the original population of this variety should be constituted of a quite number of lines which are different genetically in various agronomic characters. 5) Among the lines examined there were several heterozygous lines, and segregation was found in the progeny test. Frequency of heterozygous lines was rather high, and it has suggested the high rate of natural crossing. |
| Databáze: | OpenAIRE |
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