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Authors: Patil, Murlidhar Tukaram
Advisor: Chaudhari, Dr.K.G
Kale, Dr.P.N
Desai, Dr.U.T
Chavan, Dr.J.K
Language: en
Type: Thesis
Agrotags: null
Abstract: Investigations regarding the regulation of flouering in gladiolus were carried out at the Horticultural Farm, Mahatma Phule Agricultural University, Rahuri (Dist. -Ahmednagar) during the year 1986-87 to find out the effect of different storage conditions and growth regulators on the off season planting of gladiolus in tuo different varieties (Doselita and Sylvia). Hormonal changes in stored corms were also recorded. As regards hormonal status of stored corms, it uas observed that at the end of storage auxin like substances uere higher in cold stored corms, GA like substances uere more in the room temperature stored corms, while ABA like substances were less in corms from room temperature storage. The tuo cultivars differed in their hormonal content when stored at different conditions. In respect of performance of off season planting, sprouting of corms was earlier in variety 3oselita at all plantings. It produced more number of leaves, gave significantly earlier flouering, bettor percentage of flouering, more number of florets and more number of corms in relatively shorter period than Sylvia. Sylvia produced bigger florets, longer flower stalks, bigger corms and cormels, and more cornels than Joselita. Corms stored in the cold storage had accelerated sprouting and gave the crop of longer flower stalks, took less number of days for emergence and harvest of flower stalks and these flowers had better vase life. More number of corms was found from room temperature storage, where as bigger corms and more number of cormels were obtained from the corms held at cold storage. Corms planted in March sprouted earlier followed by February, January, December, November and October plantings. March planting produced more number of florets, bigger florets, more length of flower stalks and resulted in better vase life followed by February and January plantings. The percentage of blind shoots was more in February planting. January planting produced more corms than March and February plantings. But heavy and bigger sized corms and more cormels were evident in March and February plantings. In rest of the plantings relatively small and light corms and less number of cormels were produced.GA as also ethrel significantly induced early sprouting more number of leaves, early flowering, more flowers, bigger florets, better vase life and early and profuse corm and cormel production. GA induced early sprouting, flowering and corm maturation than ethrel, Ethrel on the other hand produced more cormels. It is concluded that freshly harvested corms (September) should preferably be held in cold storage for three to four months and then planted to undertake off season crop in gladiolus. It will enable to harvest the flowers during marriage seasons (April-June) when there is heavy demand. For better results the corms should also be pre-soaked for 24 hours in 100 pPm GA or 100 ppm ethrel, preferably in the former.
Subject: Horticulture
Theme: Horticulture
These Type: M.Sc
Issue Date: 1987-12-30
Appears in Collections:Thesis

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