POLLINATION AND FRUIT SET STUDIES IN CUCUMBER (Cucumis sativus L.)

dc.contributor.advisorRAMESH, KUMAR
dc.contributor.authorVERMA, NEHA
dc.date.accessioned2017-08-16T12:08:13Z
dc.date.available2017-08-16T12:08:13Z
dc.date.issued2017
dc.description.abstractABSTRACT The present investigations entitled “Pollination and fruit set studies in cucumber (Cucumis sativus L.)” were carried out at the Experimental Research Farm, Department of Vegetable Science, Dr. YS Parmar University of Horticulture and Forestry, Nauni, Solan (HP) during Kharif, 2016 to gather information on use of chemicals (Gibberellic acid, Silver nitrate and Silver thiosulphate) in modification of sex expression in gynoecious varieties (GYNO-1 and GYNO-2) of cucumber, floral biology and also to assess the efficiency of different system of pollination on fruit and seed setting and their characteristics in monoecious (K-75 and UHF-CUC-101) and gynoecious (GYNO-1 and GYNO-2) varieties. The experiment was laid out in a RCBD with three replications. Use of chemical in modification of sex expression, floral biology, fruit and seed setting studies were assessed through factorial analysis in randomized block design and completely randomized design proposed by Panse and Sukhatme (2000). The observations were recorded on use of chemicals in modification of sex expression in gynoecious lines (induction of male flowers), pollination studies, time of anthesis, dehiscence, pollen viability(%), stigma receptivity, node number bearing first female flower, average fruit weight (g), number of seeds per fruit and thousand seed weight (g). Amongst the various chemical used, silver thiosulphate was found best for the induction of staminate flower in gynoecious cucumber at 500ppm. Anthesis started at 6AM and completed by 8AM with the maximum anthesis between 6AM to 7AM in monoecious varieties whereas, in gynoecious varieties it was maximum upto 6:00AM in both open and controlled conditions and similar pattern was observed for dehiscence. Dehiscence occurs soon after anthesis. Maximum pollen viability was recorded on the day of anthesis and viability of pollen under refrigerated condition does not decreased as rapidly as it was under room temperature condition with the duration of pollen storage. Maximum stigma receptivity was noticed at anthesis time and pollination during this interval recorded maximum fruit set. A higher fruit set was observed in case of open pollination as compared to self pollination method. Gynoecious lines were earlier in flowering and fruiting than monoecious varieties. Open pollination had better effect on fruit and seed characteristics as compared to self pollination.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810028739
dc.keywordscucumber (Cucumis sativus L.),Pollination, fruit seten_US
dc.language.isoenen_US
dc.pages65+VIIen_US
dc.publisherUHF,NAUNIen_US
dc.rating.count5en
dc.subVegetable Scienceen_US
dc.subjectnullen_US
dc.themecucumber (Cucumis sativus L.),Pollination, fruit seten_US
dc.these.typeM.Scen_US
dc.titlePOLLINATION AND FRUIT SET STUDIES IN CUCUMBER (Cucumis sativus L.)en_US
dc.typeThesisen_US
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