The Relationship between Dry Matter Increase of Seed and Shoot during the Seed-Filling Period in Three Kinds of Soybeans with Different Growth Habits Subjected to Shading and Thinning

Kakiuchi, Jin; Kobata, Tohru

doi:10.1626/pps.9.20

Cited by 13 publications

(12 citation statements)

References 20 publications

(28 reference statements)

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“…There was a significant difference of 100 seeds weight among cultivars ( Table 4). The results of the present study are in agreement with earlier reports by Kakiuchi and Kobata [12,13]. In contrast, shading reduced seed size as reported by Egli [22].…”

Section: Seed Weightsupporting

confidence: 94%

“…Shading decreased shoot dry weight of soybean compared with the unshaded control as reported earlier by Kakiuchi and Kobata [12,13], Saito and Kato [19], and reduced dry matter yield in rice [20]. For cultivars, the shoot dry weight was significantly different (p < 0.05) among soybean cultivars ( Table 3).…”

Section: Shoot Dry Weightsupporting

confidence: 71%

“…In the wet season, the number of seeds per pod was similarly under low light at 30% and 50% of natural light in comparison with normal light. The number of seeds per pod was not influenced by the shade treatment as reported by Kakiuchi and Kobata [12,13].…”

Section: Number Of Seeds Per Podsupporting

confidence: 69%

“…For the dry season, the number of pods per plant reduced by 21% and 17% under the low light intensities at 30% and 50% of natural light, respectively. Shading reduced the number of pods per plant for soybean as reported by Kurosaki and Yumoto [21] and Kakiuchi and Kobata [12,13]. In terms of cultivar, the number of pods per plant was significantly different (p < 0.05) among soybean cultivars in wet and dry season ( Table 4).…”

Section: Number Of Pods Per Plantsupporting

confidence: 57%

“…The grain yield of soybean reduced under the low light because of reduction in dry matter production [12], total pod number per plant [8,12,13] and thousand grains weight [5]. To obtain the maximum yield of the intercrop soybean under low light stress, selection of suitable soybean cultivar plays an important role for intercropping systems.…”

Section: Introductionmentioning

confidence: 99%

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Influence of low light intensity on growth and yield of four soybean cultivars during wet and dry seasons of northeast thailand

Polthanee¹,

Promsaena²,

Laoken³

2011

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Crop is commonly grown in intercrop combinations of which cereal/legumes are the most widespread in tropical countries. The availability of low light intensity due to shading is the critical factor in determining legume yield in intercropping. The experiment searches of better soybean cultivar for intercropping. A field experiment was conducted at the experimental farm of Khon Kaen University in 2005. The objectives of this study were to determine the influence of light regimes (30% of normal light, 50% of normal light and normal light) on the growth and yield of four soybean cultivars (early, medium and late maturity) under artificial shading at 35 days after seeding until harvest in the wet and dry seasons. The results showed that grain yield was significantly (p < 0.05) decreased under the low light intensity at 30% of natural light both in wet and dry season. This was mainly due to low light intensity at 30% of natural light decreasing the number of pods per plant in the dry season. For cultivars, grain yield was significantly difference (p < 0.05) among cultivars both in the wet and dry seasons. The cultivar KKU 74 (medium maturity) gave maximum grain yield both in wet and dry season under the low light at 30% of natural light. The KKU 74 cultivar is better adapted to shading environment than other cultivars. This was due to the KKU 74 cultivar produced higher chlorophyll b concentration in leaves after the plant experienced to shading. This physiological character can be used for soybean breeding program in shading tolerance. Therefore, the cultivar KKU 74 had a higher potential yield advantage in intercropping systems in which low light intensity is a major limiting factor on grain yield.

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Section: Seed Weightsupporting

confidence: 94%