CHARACTERIZATION OF GENETIC DIVERSITY AND POLLINATION STUDIES IN SEEDLING POPULATION OF PECAN [Carya illinoensis (WANG) K.KOCH]

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dc.contributor.advisorSHARMA, GIRISH
dc.contributor.authorTHAKUR, KIRAN
dc.date.accessioned2019-03-15T09:11:44Z
dc.date.available2019-03-15T09:11:44Z
dc.date.issued2019-02
dc.description.abstractABSTRACT The present investigation entitled “Characterization of genetic diversity and pollination , in seedling population of pecan [Carya illinoensis (Wang) K.Koch]” was carried out at the Experimental Orchard, Kalaghat Department of Fruit Science, Dr YSPUHF Nauni Solan (HP) during 2015-2017, aimed to assess the nature and magnitude of variability in seedling population so as to identify compatible genotypes to enhance pecan productivity. The plant growth, foliage, floral, nut and kernel characteristics were determined to characterize the genetic diversity in 70 trees of seedling origin while fruit set, fruit retention and various nut, kernel characters under different modes of pollination were studied. The seedling population exhibited variation in plant growth i.e. upright,semi upright and spreading, branching density was also variable so was the yield potential and STN 39 had highest trunk diameter . Nut yield varied from 0.56 to 13.36 kg/tree. Variation was also observed for leaflet number, time of leaf bud burst, leaf fall, leaf shape, time of leaf shedding, stigma receptivity. Most seedlings were protandrous. Maturation of nut extended from 4th September to 29th September. STN 35 had higher nut weight (10.58 g), width, kernel weight (7.40 g), whereas, STN 61 had higher nut length (45.54 mm). Minimum shell thickness (0.25 mm) was in STN 20 and maximum kernel recovery was in STN 7 (87.92 %). Based upon evaluation studies, 8 genotypes were identified as promising for various nut and kernel characteristics. Pollination studies indicated that cross STN 61×PS2 had highest fruit set, retention, nut and kernel weight, nut and kernel length whereas cross STN 63×PS3 had highest kernel recovery, nut and kernel width as well as highest fat content. Mean fruit set and retention were highest in open pollinated trees and so was nut, kernel weight, kernel recovery than in hand self pollination. Nut yield was positively correlated with nut and kernel weight, length, showed inverse relationship with protein. High heritability for kernel recovery, fat content and nut length suggested selection could be effective for these characters.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810098642
dc.keywordspecan, genetic diversity,pollination studiesen_US
dc.language.isoenen_US
dc.publisherUHF,NAUNIen_US
dc.subFruit Scienceen_US
dc.subjectnullen_US
dc.themepecan, genetic diversity,pollination studiesen_US
dc.these.typePh.Den_US
dc.titleCHARACTERIZATION OF GENETIC DIVERSITY AND POLLINATION STUDIES IN SEEDLING POPULATION OF PECAN [Carya illinoensis (WANG) K.KOCH]en_US
dc.typeThesisen_US
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