Study on Dormancy Breaking and Growth Model for Gladiolus Corm

• Main Authors: Ming-Hong Jean, 簡銘宏
• Other Authors: Chung-Teh Sheng
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/56099323814937803358

博士 === 國立中興大學 === 生物產業機電工程學系 === 93 === This study was conducted to discover the treatment demands after harvesting and grading for Gladiolus corms. The following key techuiques, which were dormancy breaking, respiration rate, ERH/EMC, and Germination rate, etc., were developed. This study did include the study on growing rates and growth models of Gladioulus corms. The values of ERH for fresh Gladioulus croms were greater than 0.9. If the relative humidity in a storage room exceeded 90%, it would not only induce the attacks of mold and bacteria on the flower corms but also retard the germination of flower corms. Therefore, it was necessary to lower the relative humidity to 70-80% in order to storage the corms properly. The experiments were executed to find out the effect of storage period on breaking dormancy of flower bulbs of Gladiolus in 50C. The non-linear regreesion technique was used to analyze the data. The related mathematical model for dormancy breaking and germination rate was established. The optimal technique was applied to compute the shortest period for cold strage. The experimental results showed the longer cold storage period is, the better germination homogeneity and time were. For shortening the germination time and increasing the germination homogeneity, the cold storage period had been extended. In this study, the growth characteristics of Gladiolus with four treatments were recorded. These data were analysis by non-linear regression technique to establish growth models. These models were tested and compared on the effect of treatments via F statistics. The results indicated that three growth models of stem length and logarithm leaf area were acceptable. The sizes of corm and plant depths did significantly influence the growth characteristics of Gladiolus.