Variation of fruit morphology and genetic divergence of indigenous pointed gourd

Authors

  • Siddikul Islam Dakshin Dinajpur Krishi Vigyan Kendra, Uttar Banga Krishi Viswavidyalaya, Majhian, Dakshin Dinajpur, West Bengal-733133, India
  • Suchand Datta Department of Vegetable and Spice Crops, Uttar Banga Krishi Viswavidyalaya Pundibari, Cooch Behar, West Bengal-736165, India.
  • Bimal Das
  • Shibnath Basfore 1Department of Vegetable and Spice Crops, Uttar Banga Krishi Viswavidyalaya Pundibari, Cooch Behar, West Bengal-736165, India.
  • Ranjit Chatterjee
  • Ram Krishna Sarkar 1Department of Vegetable and Spice Crops, Uttar Banga Krishi Viswavidyalaya Pundibari, Cooch Behar, West Bengal-736165, India.

DOI:

https://doi.org/10.3329/bjb.v53i1.72256

Keywords:

Pointed gourd, Genetic divergence, Fruit morphology, PCA

Abstract

Thirty one indigenous pointed gourd genotypes were studied in Terai region of West Bengal, India to observe variation of fruit morphology and genetic divergence using Mahalanobis D2 statistics and principal component analysis. The field experiment was designed in RBD with three replications at Uttar Banga Krishi Viswavidyalaya, West Bengal, India during the year 2018-19
and 2019-20. All the genotypes were arranged into eight divergent clusters in which cluster I included maximum number followed by cluster II. The highest contribution towards genetic diversity was shown for node at the first female flower (37.85%) followed by
chlorophyll a content of leaf (16.77%) and seeds per fruit (12.04%). Principal component-1 had maximum variability (43.83%) with positive loading for the characters like node at the first female flower (0.298), appearance of first female flower (0.265), days to fruit maturity (0.194) and internodal length (0.137). Based on the inter and intra cluster distance cross combinations in between lines PCP-17 and PCP-19, PCP-17 and PCP-9, PCP-17 and PCP-28, PCP-19 and PCP-11, PCP-14 and PCP-9 and PCP-23 and PCP-10 may be utilized in future improvement programme of pointed gourd.

Bangladesh J. Bot. 53(1): 193-201, 2024 (March)

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Author Biography

Ranjit Chatterjee

1Department of Vegetable and Spice Crops, Uttar Banga Krishi Viswavidyalaya Pundibari, Cooch Behar, West Bengal-736165, India.

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Published

2024-03-31

How to Cite

Islam, S. ., Datta, S. ., Das, B. ., Basfore, S. ., Chatterjee, R. ., & Sarkar, R. K. . (2024). Variation of fruit morphology and genetic divergence of indigenous pointed gourd. Bangladesh Journal of Botany, 53(1), 193–201. https://doi.org/10.3329/bjb.v53i1.72256

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