Morphological and physico-chemical characterization of Indian jujube (zizyphus mauritiana lamk.) germplasm in Punjab
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Date
2020
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Punjab Agricultural University, Ludhiana
Abstract
The present investigation entitled “Morphological and Physico-chemical characterization
of Indian jujube (Zizyphus mauritiana lamk.) germplasm in Punjab” was conducted at
Regional Fruit Research Station, Bahadurgarh, Patiala, Punjab, during 2019-2020. The
study had two objectives viz. Morphological and physico-chemical characterization of ber
germplam in Punjab and to assess the genetic diversity within 27 genotypes of ber in
Punjab. From an already established ber orchard the study was conducted. Throughout its
different growth phases different observations were recorded year round, which include
tree characters, foliar characters, floral characters, fruit and stone characters. Genotypic
variance (42.15) and phenotypic variance (0.02) was found higher for fruit weight and
lowest for stone width (0.02) and (0.03). Genotypic coefficient of variation (50.39) and
phenotypic coefficient of variation (53.97) was found higher for fruit weight and lowest for
leaf length (11.00) and (11.92). Heritability was found maximum for fruit weight (88.16
%), while minimum heritability was found for stone length (63.64 %). Per cent genetic
advance was found maximum for fruit weight (97.46 %), while minimum for stone length
(20.26 %). Highest positive genotypic correlation was found between fruit width and fruit
weight (0.955), highest negative correlation was found between leaf length and fruit
weight (-0.391).Highest positive phenotypic correlation was found between fruit width and
fruit weight (0.831), highest negative correlation was found between fruit length and leaf
length (-0.366). Path coefficient analysis revealed that the indirect effect of stone length
through fruit length on fruit weight was recorded highest (0.4643), while indirect effect of
stone weight on fruit weight through stone width (-0.2470) was recorded lowest. Based
on diversity analysis all the cultivars can be grouped into three clusters but for
biochemical data the genotypes under study are divided into two clusters, considering the
similarities between the genotypes with respect to biochemical attributes .
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Citation
Karthik, K.P. (2020). Morphological and physico-chemical characterization of Indian jujube (zizyphus mauritiana lamk.) germplasm in Punjab (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.