Effect of thinning on cultivar differences of green stem disorder in soybean
| Autor: | Yohei Kawasaki, Tatsuhiko Shiraiwa, Katsuyuki Katayama, Ryo Yamazaki, Tomoyuki Katsube-Tanaka |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
congenital hereditary and neonatal diseases and abnormalities Thinning thinning food and beverages nutritional and metabolic diseases source–sink balance green stem disorder (gsd) 04 agricultural and veterinary sciences lcsh:Plant culture Biology 01 natural sciences Horticulture breeding 040103 agronomy & agriculture 0401 agriculture forestry and fisheries lcsh:SB1-1110 Cultivar cultivar difference soybean Agronomy and Crop Science 010606 plant biology & botany Field conditions |
| Zdroj: | SC10201905100010 NARO成果DBa OA Plant Production Science, Vol 22, Iss 2, Pp 311-318 (2019) |
| ISSN: | 1349-1008 1343-943X |
| DOI: | 10.1080/1343943x.2018.1557531 |
| Popis: | Green stem disorder (GSD) in soybean (Glycine max (L.) Merrill) negatively affects harvest efficiency and seed appearances. Breeding GSD-insensitive cultivars is expected to be an effective countermeasure to GSD. However, it is difficult to stably detect cultivar differences in GSD under conventional field conditions because the occurrences of GSD largely vary by location and year. The thinning effect, which had been reported to promote GSD, may help accurate phenotyping for occurrences of GSD in breeding. To verify this possibility, the thinning treatment was applied to four cultivars, the GSD severity values of which were evaluated in an independent study by another group. As a result, the cultivar differences in GSD severity were generally comparable between the present and previous studies. However, the difference was more evident, with the thinning treatment exhibiting the GSD score of 2.8 of ‘Hatsusayaka’ compared with the GSD score of 3.6 of ‘Sachiyutaka’, while the scores of those cultivars were similar without the thinning treatment. A positive correlation between GSD severity and N concentration in the main stem could be seen but the increasing rate of GSD score with the N concentration in the main stem differed between cultivars. Thus, although more cultivars need to be tested to prove, the thinning treatment could be useful as a phenotyping technique in the breeding of GSD-insensitive cultivars. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|