Relationships Between Vegetative Characteristics, Leaf Carbohydrate and Nitrogen Content, and Flowering Performances in Phalaenopsis

• Main Authors: Dai, An-Chi, 戴安琪
• Other Authors: Hsu, Shan-Te
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/82756653674635516652

碩士 === 國立嘉義大學 === 園藝學系研究所 === 102 === The aim of this study is to find out relationships between plant vegetative characteristics and leaf carbohydrate and nitrogen content and flowering performances in Phalaenopsis using three kinds of commercial cultivars, Doritaenopsis Join Angel ‘KHM551’, Dtps. Luchia Pink ‘KHM1078’and Dtps. I-Hsin Holiday ‘KHM1259’. For ‘KHM551’, ‘KHM1078’and ‘KHM1259’plants cultivated in 7.5 cm pots lasting 16-weeks, the plants vegetative characteristics were not significantly growth that cultivated in 10.5 cm pots lasting 16-weeks. For ‘KHM551’ and ‘KHM1078’plants cultivated in 10.5 cm pots lasting 16-weeks, the leaf soluble sugar content were significantly growth after stalking,‘KHM551’,‘KHM1078’and ‘KHM1259’ plants cultivated in 10.5 cm pots lasting 16-weeks, the starch content were significantly decrease after stalking. ‘KHM551’,‘KHM1078’and ‘KHM1259’plants cultivated in 10.5 cm pots lasting 16-weeks, the days of stalk emergence were 19.8, 20.8 and 19.8, the days of bud emergence were 71.6, 77.8 and 67.8 days, the days of bloom days were 117.8,113.8 and 108.2 days, percentage of plants with double flower stalks double stalk plant/all forcing plant were 72.5%, 67.5% and 5%. Terms of relationships between vegetative characteristics, leaf carbohydrate and nitrogen content in vegetative and reproductive. The carbon-nitrogen ratio of second mature leaves was significantly correlated with leaf width and leaf area, and high significantly correlated with leaf length and thickness. Half month after stalking, the dry matter was high significantly correlated with soluble sugars, starch, total sugar and total nitrogen. Term of canonical correlation between leaf vegetative characteristics, vegetative characteristics of whole plant and flowering performances, at four weeks before stalking, one day before stalking and two weeks after stalking, the leaf length, leaf fresh weight, leaf area and average of leaf area are both major contribution factors, which have high correlation to the days to stalk emergence, days to bud emergence, days to bloom and flower no. per main stalk. The results showed that phalaenopsis cultivated in 10.5 cm pots lasting 12 and 16 weeks, the leaf length and leaf area might be predictable indices for evaluating flowering performance.