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RISS 인기검색어
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- 저자 : Xue Wei Wu (검색결과 2 건)
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Studies of bulb harvest date and vernalization on growth and flowering of lily
오학위 Dankook universuty 2013 국내박사
STUDIES OF BULB HARVEST DATE AND VERNALIZATION ON GROWTH AND FLOWERING OF LILYG Chapter 1. Effect of lily bulb harvest date on the growth and flowering. Abstract: Oriental hybrid lily ‘LeReve’, ‘Sorbonne’, ‘Siberia’, and OT hybrid lily ‘Yelloween’ were used to determine the relationship between bulb harvest dates and the number of days from planting to shoot emergence and to anthesis. Data on shoot emergence and on anthesis was subjected to regression analysis of the bulb harvest dates. The number of days from planting to shoot emergence (ŶSE) and to anthesis (ŶAN) were significantly decreased, showing the linear effect responding to number of harvest dates in a year (x) for all cultivars (P≤0.001). The regression model equations of the number of days from planting to shoot emergence are ŶSE =145.7 - 0.44x (0< ŶSE <66, 180< x <331) for ‘Le Reve’, ŶSE =194.97 - 0.58x (0< ŶSE <90, 180< x <336) for ‘Sorbonne’, ŶSE =116.8 - 0.24x (29< ŶSE <74, 180< x <365) for ‘Siberia’, and ŶSE =152.8 - 0.36 x (21< ŶSE <88, 180< x <365) for ‘Yelloween’. The regression model equations of the number of days from planting to anthesis are ŶAN =229.5 - 0.45 x (66< ŶAN <149, 180< x <331) for ‘Le Reve’, ŶAN =334.5 - 0.65 x (107< ŶAN <227, 180< x <365) for ‘Sorbonne’, ŶAN =336.1 - 0.61x (113< ŶAN <226, 180< x <365) for ‘Siberia’, and ŶAN =322.1 - 0.64 x (88< ŶAN <207, 180< x <365) or ‘Yelloween’. The number of days from harvest to anthesis were significantly decreased, responding linearly to harvest dates of bulbs for all cultivars (P≤0.001). Chapter 2. Effect of duration of lily bulb vernalization on the growth and flowering. Abstract: To determine the relationship between the duration of bulb vernalization and the number of days from planting to shoot emergence and the days from planting to anthesis, Oriental hybrid lily ‘Le Reve’, ‘Sorbonne’, ‘Siberia’, and OT hybrid lily ‘Yelloween’ were used. The results showed that the duration of bulb vernalization was subjected to linear regression with the number of days from planting to shoot emergence and to anthesis. The number of days from planting to shoot emergence (ŶSE) and to anthesis (ŶAN) were significantly decreased by durations of bulb vernalization (x) for all cultivars (P≤0.001). The regression model equations of the number of days from planting to shoot emergence are ŶSE =57.8 - 0.54x (0< ŶSE <58, 0< x <107) for ‘Le Reve’, ŶSE =97.83 - 1.03x (0< ŶSE <98, 0< x <95) for ‘Sorbonne’, ŶSE =94.28 - 0.72x (0< ŶSE <95, 0< x <130) for ‘Siberia’, and ŶSE =124.73 - 1.1 x (0< ŶSE <125, 0< x <114) for ‘Yelloween’. The regression model equations of the number of days from planting to anthesis are ŶAN =140.5 - 0.54 x (43< ŶAN <140, 0< x <180) for ‘Le Reve’, ŶAN =234.33 - 1.2 x (20< ŶAN <234, 0< x <180) for ‘Sorbonne’, ŶAN=237.81 - 1.12 x (37< ŶAN <237, 0< x <180) for ‘Siberia’, and ŶAN =198.12 - 0.94 x (29< ŶAN <199, 0< x <180) for ‘Yelloween’. The number of days of ‘Le Reve’ and ‘Yelloween’ from harvest to anthesis were significantly increased by extended bulb vernalization treatment, however, those of ‘Siberia’ and ‘Sorbonne’ significantly decreased (P≤0.001). Chapter 3. Effect of lily bulb harvest date and vernalization duration on the growth and flowering. Abstract: To develop vernalization model in Lilium hybrids, Oriental hybrid lily ‘Le Reve’, ‘Sorbonne’, ‘Siberia’, and OT hybrid lily ‘Yelloween’ were used to determine the relationship between harvest dates and bulb vernalization duration with the days from harvest to anthesis, respectively. The results showed that both of the harvest date (x1) and durations of bulb vernalization (x2) significantly affected the days from harvest to anthesis by curved surface relations for all cultivars (P≤0.001). The regression equations of the days from harvest to anthesis (ŶAN) are ŶAN =234.3 + 0.68x1 + 0.41x2 (R2=0.88) for ‘Le Reve’, ŶAN =451.8 + 0.25 x1 - 0.23 x2 + 0.009 x1 × x2 (R2=0.51) for ‘Sorbonne’, ŶAN =425.5 + 0.3 x1 + 0.07 x2 – 0.002 x12 + 0.006 x1 × x2 + 0.007 x22 (R2=0.78) for ‘Siberia’, and ŶAN =390.4 + 0.31 x1 + 0.19 x2 - 0.006 x12 + 0.007 x1 × x2 (R2=0.76) for ‘Yelloween’ (for all cultivars, 180< x1 <360, 0< x2 <180, P≤0.001). Chapter 4. Changes in soluble carbohydrates, plant growth regulators in different bulb tissues, and growth and development influenced by bulb harvest date and duration of bulb vernalization of the vernalized Oriental lily ‘Siberia’. Abstract: The soluble sugar, growth regulators content were affected by harvest date and lily bulb tissues. Plant height, the number of flower buds, and abscission leave of the Oriental lily ‘Siberia’ influenced by harvest dates and duration of bulb vernalization treatment durations were investigated. The results showed that the plant height and flower buds number were not significantly affected by harvest dates and bulb vernalization, but the number of losing leaves was significantly affected by harvest dates (P≤0.05). Concentrations of soluble sucrose, glucose, and fructose were significantly different in lily bulb tissues (mother scales, daughter scales and shoot) (P≤0.05). The glucose content was significantly increased when bulbs were harvested late, but no significant differences were observed in sucrose and fructose contents regardless of bulb harvest dates. The sucrose content in shoot was significantly higher than those of in mother scales and daughter scales (P≤0.05). The IAA and GA concentrations were significantly increased as bulb harvest dates were delayed, however, ABA content was decreased (P≤0.05).
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