Factors in the Reduction in Grain Number in Winter Wheat by Early-Sowing in Yamaguchi
Grain number per spike of wheat is lower in early sowing than in the conventional standard cultivation in Yamaguchi, Prefecture, Japan. Components of the grain number per spike in five cultivars were analyzed with respect to temperature during the spike development period throughout three growing se...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2007-01-01
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| Series: | Plant Production Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1626/pps.10.189 |
| _version_ | 1817998576943366144 |
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| author | Li Zhang Tadashi Takahashi Kana Fujimoto Shinji Yamaguchi Tomohiko Matsuzawa |
| author_facet | Li Zhang Tadashi Takahashi Kana Fujimoto Shinji Yamaguchi Tomohiko Matsuzawa |
| author_sort | Li Zhang |
| collection | DOAJ |
| description | Grain number per spike of wheat is lower in early sowing than in the conventional standard cultivation in Yamaguchi, Prefecture, Japan. Components of the grain number per spike in five cultivars were analyzed with respect to temperature during the spike development period throughout three growing seasons 2001/2002, 2002/2003 and 2003/2004 to find the cause of the problem of early sowing cultivation. The plants sown in early-October and late-November were called the early sown group and the standard group, respectively, in the following. Three of the five cultivars, Hokushin, Akitakko and Nanbukomugi, showed a strong winter habit, which requires very cold temperatures for spike differentiation. The other two cultivars, Iwainodaichi and Airakomugi, had a moderate winter habit. Grain number per spike and grain yield were decreased by early-sowing (compare with the standard group) in almost all cultivars throughout the three growing seasons. The three cultivars which had a strong winter habit had fewer spikelets per spike in the early-sown group than in the standard group. The other two cultivars which had a moderate winter habit had fewer grains per spikelet in the early-sown group. The higher the temperature during the spikelet formation phase, which is from flag leaf initiation to terminal spikelet initiation, the higher the number of spikelets per spike in the standard group. The spikelet number per spike in the early-sown group increased with the increase in productive tillers under fertile conditions. Such conditions also increased the grain number per spike. |
| first_indexed | 2024-04-14T02:55:24Z |
| format | Article |
| id | doaj.art-16a26a23840642a6b707d76e781d70de |
| institution | Directory Open Access Journal |
| issn | 1343-943X 1349-1008 |
| language | English |
| last_indexed | 2024-04-14T02:55:24Z |
| publishDate | 2007-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Plant Production Science |
| spelling | doaj.art-16a26a23840642a6b707d76e781d70de2022-12-22T02:16:07ZengTaylor & Francis GroupPlant Production Science1343-943X1349-10082007-01-0110218919810.1626/pps.10.18911644829Factors in the Reduction in Grain Number in Winter Wheat by Early-Sowing in YamaguchiLi Zhang0Tadashi Takahashi1Kana Fujimoto2Shinji Yamaguchi3Tomohiko Matsuzawa4Tottori UniversityYamaguchi UniversityYamaguchi UniversityYamaguchi UniversityYamaguchi UniversityGrain number per spike of wheat is lower in early sowing than in the conventional standard cultivation in Yamaguchi, Prefecture, Japan. Components of the grain number per spike in five cultivars were analyzed with respect to temperature during the spike development period throughout three growing seasons 2001/2002, 2002/2003 and 2003/2004 to find the cause of the problem of early sowing cultivation. The plants sown in early-October and late-November were called the early sown group and the standard group, respectively, in the following. Three of the five cultivars, Hokushin, Akitakko and Nanbukomugi, showed a strong winter habit, which requires very cold temperatures for spike differentiation. The other two cultivars, Iwainodaichi and Airakomugi, had a moderate winter habit. Grain number per spike and grain yield were decreased by early-sowing (compare with the standard group) in almost all cultivars throughout the three growing seasons. The three cultivars which had a strong winter habit had fewer spikelets per spike in the early-sown group than in the standard group. The other two cultivars which had a moderate winter habit had fewer grains per spikelet in the early-sown group. The higher the temperature during the spikelet formation phase, which is from flag leaf initiation to terminal spikelet initiation, the higher the number of spikelets per spike in the standard group. The spikelet number per spike in the early-sown group increased with the increase in productive tillers under fertile conditions. Such conditions also increased the grain number per spike.http://dx.doi.org/10.1626/pps.10.189Early sowing cultivationGrain number per spikeGrain number per spikeletMultiple regressionSpike development periodSpikelet number per spikeTemperatureWinter wheat cultivar |
| spellingShingle | Li Zhang Tadashi Takahashi Kana Fujimoto Shinji Yamaguchi Tomohiko Matsuzawa Factors in the Reduction in Grain Number in Winter Wheat by Early-Sowing in Yamaguchi Plant Production Science Early sowing cultivation Grain number per spike Grain number per spikelet Multiple regression Spike development period Spikelet number per spike Temperature Winter wheat cultivar |
| title | Factors in the Reduction in Grain Number in Winter Wheat by Early-Sowing in Yamaguchi |
| title_full | Factors in the Reduction in Grain Number in Winter Wheat by Early-Sowing in Yamaguchi |
| title_fullStr | Factors in the Reduction in Grain Number in Winter Wheat by Early-Sowing in Yamaguchi |
| title_full_unstemmed | Factors in the Reduction in Grain Number in Winter Wheat by Early-Sowing in Yamaguchi |
| title_short | Factors in the Reduction in Grain Number in Winter Wheat by Early-Sowing in Yamaguchi |
| title_sort | factors in the reduction in grain number in winter wheat by early sowing in yamaguchi |
| topic | Early sowing cultivation Grain number per spike Grain number per spikelet Multiple regression Spike development period Spikelet number per spike Temperature Winter wheat cultivar |
| url | http://dx.doi.org/10.1626/pps.10.189 |
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