Organic fertilizer application increases anther length and number of engorged pollen grains in rice plants
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- TAKI Noriaki
- Miyagi Pref. Furukawa Agricultural Experiment Station
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- ASANO Masumi
- Miyagi Pref. Furukawa Agricultural Experiment Station
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- KUMAGAI Chifuyu
- Miyagi Pref. Furukawa Agricultural Experiment Station
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- HATANAKA Atsushi
- Miyagi Pref. Furukawa Agricultural Experiment Station:(Present office)Miyagi Pref. Plant Protection Office
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- SAITO Kimio
- Miyagi Pref. Furukawa Agricultural Experiment Station:(Present office)Miyagi Plant Protection Association
Bibliographic Information
- Other Title
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- 有機質肥料施用による水稲の葯長と充実花粉数の拡大効果
- ユウキシツ ヒリョウ シヨウ ニ ヨル スイトウ ノ ヤクチョウ ト ジュウジツ カフンスウ ノ カクダイ コウカ
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Abstract
Organic fertilizer (OF) is widely applied in paddy fields because of a growing environmental consciousness among farmers. However, no studies have examined the effect of easily decomposable OF on the cold tolerance of rice plants. In this study, we examined the effects of easily decomposable OF on anther length and the number of engorged pollen grains, as these characteristics are closely related to cold injury. Readily available inorganic fertilizer (RAF) and controlled-availability inorganic fertilizer (CAF) were used as controls. During our observations in 2005 and 2006, air temperatures were not sufficiently low to damage rice plants. In 2005, the number of engorged pollen grains ranged from 1089 to 1319 per anther in the RAF plots, versus 1291 to 1351 in the OF plots (an increase of approximately 10%). The number of pollen grains in the CAF plot was 1389, similar to that in the OF plots. In 2006, the number of pollen grains ranged from 1016 to 1137 in the RAF plots, versus 1197 to 1239 in the OF plots. Anther length was longer in the OF and CAF plots than in the RAF plots. The number of engorged pollen grains in the RAF plots was significantly negatively correlated with the number of rice grains per square meter, whereas those in the OF and CAF plots showed no correlation. Thus, the number of engorged pollen grains in the OF and CAF plots was greater than that in the RAF plots at the same grain density. Furthermore, the number of engorged pollen grains in the RAF plots was significantly negatively correlated with the nitrogen content of the shoots at meiosis (a factor that was most sensitive to cold weather), whereas those in the OF and CAF plots showed no correlation. These results suggest that the slow release of nitrogen from OF and CAF increased anther length and the number of engorged pollen grains.
Journal
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- Japanese Journal of Soil Science and Plant Nutrition
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Japanese Journal of Soil Science and Plant Nutrition 79 (2), 147-154, 2008
Japanese Society of Soil Science and Plant Nutrition
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Details 詳細情報について
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- CRID
- 1390282681533611264
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- NII Article ID
- 110007328381
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- NII Book ID
- AN00195767
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- ISSN
- 24240583
- 00290610
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- NDL BIB ID
- 9497631
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed