Study On Introduction And Bulb Propagation Zone Trail Of Gladiolus

Gladiolus (Gladiolus hybridus) is one of perennial and monocotyledonous bulbous flowers, and was one of four famous cut flowers in the world.At present, the best bulbs produced cut flowers were still dependent on import as to serious degradation of bulbs, and failed to achieve domestic production.The study introduced Nova Lux,Jacksonville Gold,Priscilla,Mascagni,Traderhorn,Blue Spirit,Pink Lady,Rose Supreme,Span and Spanic,which were from abroad and were taken as experimental plants for our study.Firstly,they were cultivated in Yangling,and observed their characteristics of cultivars.Secondly,they were cultivated in three zones containing Hanzhong,Taibai and Yangling in order to do zone trail.The result provided a basis for finding the excellent zone propagated bulbs,and then realized domestic production.The results were as follows:1.The results of study on biological characteristic of gladiolus cultivars showed:The phonological phase among gladiolus cultivars showed obvious differences;The blooming period existed obvious differences;The green period of Jacksonville Gold was longest and up to 182;The dynamic growth curve on stem length behaved different and quantitative"S"shape in the vegetative growth;The content of chlorophyii of Mascagni and Pink Lady cultivars behaved a declining trend after bud period,and other cultivars behaved a sharp downward tendency after blooming period;The leaf of Mascagni was relative spacious,and the leaf of Rose Supreme was relative narrow;There had differences in pistil,stamen and flower among cultivars.2.In reginal cultivation of fresh cut flower of gladiolus,the research took germination rate,indence rate and the relative content of chlorophyii responding potential growth as the evaluation indicators,the comparison result showed the growth potential and the content of chlorophyii in seedling stage had little differences in three zones,and all growth better.Then,the study carried comprehensive and corrective evaluation on quality of cut flower through ambiguity-probability,the result showed that the trail zone ascertained the comprehensive index of Mascagni,Traderhorn and Blue Spirit were higher in Yangling,and the comprehensive indexs of other cultivars behaved declining according to the orders"Hanzhong-Yangling-Taibai",and ensured that Hanzhong was suitable to produce cut flowers.3.In reginal propagation on bulbs of gladiolus,the trail used the appearance of bulbs and the storage of bulbs as the evalution basis.The result showed that,the datas of the appearance of bulbs and the content of storage of bulbs had declined according to the order"Taibai- Yangling-Hanzhong".The indicators of bulb propagation number were higher in Taibai,and also the content of storage of corm was relative high in Taibai.Yangling and Taibai were suitable to select corm of 0.8～1.0cm for propagation.The numbers of bulb propagation in single plant showed that Traderhorn was higher in Yangling than in Taibai, and other cultivars behaved decreasing according to the order"Taibai-Yangling-Hanzhong".The research carried comprehensive evaluation on quality of bulb through the analyzing method of ambiguity-probability, and showed that Yangling was suitable for propagating Nova Lux and Traderhorn, and Taibai was adapt to propagate other cultivars.