Effect of Dwarfing Induced by Uniconazole-P on Snow Tolerance of the Faba Bean (Vicia faba L.)
To clarify the effect of artificial dwarfing induced by uniconazole-P, a gibberellin biosynthesis inhibitor, on the snow tolerance of faba bean, we examined the snow damage, non-structural carbohydrate (NSC) concentration, and resistance to snow molds of the seedlings treated with uniconazole-P. Art...
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2001-01-01
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doaj-9619d23bfe734b06a415c8bf4f4c47df2020-11-24T21:56:56ZengTaylor & Francis GroupPlant Production Science1343-943X1349-10082001-01-014318919510.1626/pps.4.18911644484Effect of Dwarfing Induced by Uniconazole-P on Snow Tolerance of the Faba Bean (Vicia faba L.)Naoko FukutaMichiyoshi Arai0Tomoyuki Yukawa1Osamu Matsumura2Hokuriku National Agricultural Experiment StationHokkaido National Agricultural Experiment StationHokuriku National Agricultural Experiment StationTo clarify the effect of artificial dwarfing induced by uniconazole-P, a gibberellin biosynthesis inhibitor, on the snow tolerance of faba bean, we examined the snow damage, non-structural carbohydrate (NSC) concentration, and resistance to snow molds of the seedlings treated with uniconazole-P. Artificial dwarfing markedly decreased snow damage caused by continuous snow cover for 62 days. NSC concentration, which affects physiological snow tolerance and snow mold resistance, was lower in dwarfed plants than in non-dwarfed plants. However, there was no difference in the rate of decrease of NSC concentration between dwarfed and non-dwarfed plants under cold and dark conditions simulating snow cover. In inoculation tests, the lesions of Pythium iwayamai and Sclerotinia trifoliorum on the leaves detached from dwarfed plants were shorter than those on the leaves from non-dwarfed plants. In artificially dwarfed plants, the leaves were thicker and darker in color, and mesophyll cells were larger and denser than those in the non-dwarfed plants. Our findings suggest that the artificial dwarfing caused by uniconazole-P increased the resistance of the leaves to snow molds, thereby increasing snow tolerance, without increasing NSC concentration. The microstructural changes that occur with dwarfing may be a factor in snow tolerance.http://dx.doi.org/10.1626/pps.4.189DwarfnessFaba beanGibberellin biosynthesis inhibitorSnow mold resistanceSnow toleranceUniconazole-PVicia faba L |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Naoko Fukuta Michiyoshi Arai Tomoyuki Yukawa Osamu Matsumura |
spellingShingle |
Naoko Fukuta Michiyoshi Arai Tomoyuki Yukawa Osamu Matsumura Effect of Dwarfing Induced by Uniconazole-P on Snow Tolerance of the Faba Bean (Vicia faba L.) Plant Production Science Dwarfness Faba bean Gibberellin biosynthesis inhibitor Snow mold resistance Snow tolerance Uniconazole-P Vicia faba L |
author_facet |
Naoko Fukuta Michiyoshi Arai Tomoyuki Yukawa Osamu Matsumura |
author_sort |
Naoko Fukuta |
title |
Effect of Dwarfing Induced by Uniconazole-P on Snow Tolerance of the Faba Bean (Vicia faba L.) |
title_short |
Effect of Dwarfing Induced by Uniconazole-P on Snow Tolerance of the Faba Bean (Vicia faba L.) |
title_full |
Effect of Dwarfing Induced by Uniconazole-P on Snow Tolerance of the Faba Bean (Vicia faba L.) |
title_fullStr |
Effect of Dwarfing Induced by Uniconazole-P on Snow Tolerance of the Faba Bean (Vicia faba L.) |
title_full_unstemmed |
Effect of Dwarfing Induced by Uniconazole-P on Snow Tolerance of the Faba Bean (Vicia faba L.) |
title_sort |
effect of dwarfing induced by uniconazole-p on snow tolerance of the faba bean (vicia faba l.) |
publisher |
Taylor & Francis Group |
series |
Plant Production Science |
issn |
1343-943X 1349-1008 |
publishDate |
2001-01-01 |
description |
To clarify the effect of artificial dwarfing induced by uniconazole-P, a gibberellin biosynthesis inhibitor, on the snow tolerance of faba bean, we examined the snow damage, non-structural carbohydrate (NSC) concentration, and resistance to snow molds of the seedlings treated with uniconazole-P. Artificial dwarfing markedly decreased snow damage caused by continuous snow cover for 62 days. NSC concentration, which affects physiological snow tolerance and snow mold resistance, was lower in dwarfed plants than in non-dwarfed plants. However, there was no difference in the rate of decrease of NSC concentration between dwarfed and non-dwarfed plants under cold and dark conditions simulating snow cover. In inoculation tests, the lesions of Pythium iwayamai and Sclerotinia trifoliorum on the leaves detached from dwarfed plants were shorter than those on the leaves from non-dwarfed plants. In artificially dwarfed plants, the leaves were thicker and darker in color, and mesophyll cells were larger and denser than those in the non-dwarfed plants. Our findings suggest that the artificial dwarfing caused by uniconazole-P increased the resistance of the leaves to snow molds, thereby increasing snow tolerance, without increasing NSC concentration. The microstructural changes that occur with dwarfing may be a factor in snow tolerance. |
topic |
Dwarfness Faba bean Gibberellin biosynthesis inhibitor Snow mold resistance Snow tolerance Uniconazole-P Vicia faba L |
url |
http://dx.doi.org/10.1626/pps.4.189 |
work_keys_str_mv |
AT naokofukuta effectofdwarfinginducedbyuniconazoleponsnowtoleranceofthefababeanviciafabal AT michiyoshiarai effectofdwarfinginducedbyuniconazoleponsnowtoleranceofthefababeanviciafabal AT tomoyukiyukawa effectofdwarfinginducedbyuniconazoleponsnowtoleranceofthefababeanviciafabal AT osamumatsumura effectofdwarfinginducedbyuniconazoleponsnowtoleranceofthefababeanviciafabal |
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1725856287434997760 |