Descriptor-based morphometric diversity and palynological studies in Jasmine (Jasminum spp.)

KURABALAKOTA  MADHAVI; MALLIKARJUN G  AWATI; A M  SHIROL; PAVAN KUMAR  P; DEVARAI LAVA  KUMAR; RITU  JAIN; VARUN M  HIREMATH; POOJA  A

doi:10.56093/ijas.v95i10.163338

Authors

KURABALAKOTA MADHAVI University of Horticultural Sciences, Bagalkote, Karnataka 587 104, India
MALLIKARJUN G AWATI University of Horticultural Sciences, Bagalkote, Karnataka 587 104, India
A M SHIROL University of Horticultural Sciences, Bagalkote, Karnataka 587 104, India
PAVAN KUMAR P University of Horticultural Sciences, Bagalkote, Karnataka 587 104, India
DEVARAI LAVA KUMAR University of Horticultural Sciences, Bagalkote, Karnataka 587 104, India
RITU JAIN ICAR-Indian Agricultural Research Institute, New Delhi
VARUN M HIREMATH College of Horticulture (Central Agricultural University, Imphal, Manipur), Thenzawl, Mizoram
POOJA A College of Horticulture (Central Agricultural University, Imphal, Manipur), Thenzawl, Mizoram

https://doi.org/10.56093/ijas.v95i10.163338

Keywords:

Diversity, DUS descriptor, Jasmine, Pollen viability, Principal component analysis

Abstract

The study was carried out during 2019–20 at the College of Horticulture, University of Horticultural Sciences, Bagalkote, Karnataka to characterize morphometric traits and pollen biology of jasmine (Jasminum spp.) using DUS descriptors and multivariate analysis across 12 genotypes. The experiment was laid out in a randomized complete block design (RCBD) with three replications. The highest coefficient of variation for quantitative traits ranged from 11.57% (plant spread)–99.31% (flowers/inflorescence). Variability in qualitative traits ranged from dimorphic (growth type and habit) to polymorphic (flower colour). Significant positive correlations were observed between floral traits and yield attributes. Pollen viability was highest in Jasminum auriculatum (Bagalkote local) at 75.72%, followed by Jasminum grandiflorum cv. CO1 Pitchi at 69.39%, and Jasminum nitidum (TNAU) at 65.42%. Principal component analysis showed PC1 and PC2 accounted for 28.40% (leaf blade dimensions, bud diameter, petal count) and 23.73% (bud length, corolla tube length, inflorescences/plant) of total variation. These findings aid in selecting parent plants for jasmine improvement and protecting new varieties under the PPVFR Act, 2001.

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