DEVELOPMENT OF PHENOPRINT IN JACKFRUIT (Artocarpus heterophyllus Lam.)
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Date
2019
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Birsa Agricultural University, Ranchi
Abstract
Artocarpus heterophyllus Lam., bearing the largest edible fruit in the world, is a
tropical evergreen tree belonging to the family Moraceae and commonly known as kathal
in Jharkhand.
The experiment was conducted at ICAR-National Bureau of Plant Genetic
Resource, Regional Station, New Bhusur, Ranchi, Jharkhand and the selected crop was
Jackfruit at ripening stage. Total Accessions were one hundred ten (110) under study,
germplasm collected from different habitates of Jharkhand, Odisha, Bihar, Meghalaya
and Assam. Experimental design was augmented design in the study. Observations were
recorded as per the descriptors provided by the IPGRI (International Plant Genetic
Resources Institute) in the study. Out of total fifty three (53) parameters taken, twenty
seven (27) were qualitative parameters and twenty six (26) were quantitative parameters.
Observations were taken on five randomly selected fruit per accession. Statistical
analysis of qualitative phenotypic traits were coded for the presence (1) and absence (0)
of each alternate form. Diversity parameters were calculated using POPGENE v 1.32
with 1000 permutations. The neighbour joining dendrogram based on Nei’s unbiased
pairwise genetic distances among genotypes was constructed in MEGA 6. Graphic
presentation method based on alternate forms for the morphological descriptors, which
we describe as ‘Phenoprint’. The Phenoprint was developed using Microsoft Excel 2013,
in which the binary data was represented as bar (s); black bar for the presence of the
variable and grey bar for the absence to provide uniqueness for each of the genotype.
Different morphological characters that contributed most to the observed phenotypic
variance are identified by principal component analysis (PCA) in the software SAS 9.2.
Objectives of the study planned for the study are to identify candidate traits for
phenoprint in jackfruit, to scale diversity of candidate traits in jackfruit accession and to
develop phenoprint of jackfruit.
In the present study results highlight out of the total 27 qualitative traits, 18
characters identified suitable for phenoprint development in jackfruit. Beside’s
significant diversity have been recorded for most of the vegetative and reproductive
attributes in the jackfruits that revealed through quantitative and qualitative analysis.
Among all the three agro ecological popualtion the genetic distance between central
north eastern plateau and south eastern plateau is zero while the maximum genetic
distance between south eastern plateau and western plateau were recorded.
This is first report in crop like jackfruit, globally. The finding will not only
establish identity of each accession but also will help to ensure purity of superior
accession during multiple chain. Therefore the phenoprint is going to play key role in
possible commodification of jackfruit.
Description
DEVELOPMENT OF PHENOPRINT IN
JACKFRUIT (Artocarpus heterophyllus Lam.)