Evaluation of Oriental Pickling Melon (Cucumis melo L. Var. conomon) Genotypes for Pest and Disease Reaction under Northern Dry Zone of Karnataka

Abstract

Cucurbits are the group of vegetables belongs to the family Cucurbitaceae. Oriental pickling melon (Cucumis melo var. conomon) is one among the melon group vegetables belongs to Cucurbitaceae family with a chromosomal number 2n=24. It is also called as golden melon or culinary melon in English. In Karnataka it is called by local names as Sambar Southe, Mogghe kayi or Mangalore southe. A field experiment was carried out at University of Horticultural Sciences Bagalkot, Karnataka to study the reaction of oriental pickling melon to fruit fly pest, diseases like powdery mildew and downy mildew disease. The results revealed that least infestation of fruit fly was recorded in Sirsi Local (40.00 %) followed by BCMCO-01 (41.30 %), BCMCO-02 and BCMSO-03 (41.75 % each). Highest infestation of fruit fly was recorded in Sirsi-2-13 (65.07 %) followed by BCMSO-04 (59.90 %). Among the genotypes, none of them had showed resistant to infestation and found susceptible to fruit fly attack in unsprayed condition. Least infestation of powdery mildew was found in Mysore Local (37.71 %) followed by Sirsi Local (37.99 %) and BCMSO-03 (39.76 %). Whereas highest mildew in GR-3 (46.08 %) followed by Sirsi-1-13 (45.81 %) and . Least infestation of downy mildew was observed in BCMCO-02 (14.00 %) followed by Sirsi Local (16.29 %) and BCMSO-03 (17.43%). Highest infestation was found in GR-2-1 (27.07%) followed by GR-4 (26.58 %) and GR-4-1 (26.23 %). Most of the genotypes were moderately susceptible to downy mildew disease.

Genetic diversity assessment and gene expression analysis of prolonged shelf-life genes in Mangalore melon (Cucumis melo ssp. agrestis var. acidulus)

“…Crossability of Mangalore melon (acidulus) with other melon groups (Singh et al 2013) and cantaloupe (Subramanian 2008), Dr. Ratnakar Shet, personal communication) have exhibited wide heterosis for early maturity and enhanced shelf life respectively. In addition, Mangalore melons have also exhibited greater variability for resistance to biotic stresses such as cucumber mosaic virus, zucchini yellow mosaic virus, different races of fusarium wilt and powdery mildew (Fergany et al 2011) and tolerance to fruit y, downey mildew (Gondi et al 2016), leaf minor and thrips infestation (Vinutha et al 2017). Thus, Mangalore melons are exceptional genetic resources for the melon breeding, especially for enhancing the shelf life of cantaloupe.…”

“…agrestis var. conomon) (Gondi et al 2016; Kamagoud and Shet 2018;Lakshmi et al 2017a;Lakshmi et al 2017b; Ramesh Babu and Hariprasad Rao 2018; Silpa et al 2019;Swamy 2017;Vinutha et al 2017). But, Mangalore melons differs from their counterpart 'conomon' melons of South East Asia with respect to larger fruits with varied shapes and size, long shelf life of more than six months and small seed size (Dhillon et Both mature and immature fruits of Mangalore melons are cooked as vegetable.…”

Genetic diversity assessment and gene expression analysis of prolonged shelf-life genes in Mangalore melon (Cucumis melo ssp. agrestis var. acidulus)

“…Seventy-nine Mangalore melon accessions were collected from different parts of Karnataka (42), Kerala (15), Andhra Pradesh (13), Telangana (05), Tamil Nadu (04) (Table 1). Additionally, seeds of cantaloupe variety 'Hara Madhu' were procured from the market.…”

“…Fruit shapes observed in the Mangalore melon accessions were oblate (28), Globular (19), ovate (17), elongated (07), pyriform (05) and elliptical (03). Observed skin colors were green striped (40), orange (13), yellow (10), green (08), four each of golden yellow and dark green. Shelf life fruits at room temperature varied from 65 days to 300 days.…”

Assessment of per se performance and variability of key fruit traits of oriental pickling melon (Cucumis melo var. conomon) genotypes

“…conomon), 2n=2x=24 is a fruit that has a great representation in the global fruit market, and in Telangana, a large amount of the fruit is for consumed, especially in the Adilabad, Nalgonda, Suryapet, Wanaparthy, Nagarkurnool, Jogulamba Gadwal and Mahabubnagar districts. It is an ideal summer vegetable crop mainly growing for fresh vegetable as well as for pickling and cooking purpose (Gondi et al, 2016) [6] and contributing to the socioeconomic development of the region. It is an herbaceous plant that belongs to the Cucurbitaceae family.…”