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Renuka D.M.,COH Bagalkot | Sadashiva A.T.,I.I.H.R.
Plant Archives | Year: 2016

Seven diverse genotypes of cherry tomatoes (Solanum lycopersicum var. cerasiforme) were crossed in a half diallel fashion during kharif 2011. The resulting twenty-one hybrids along with 7 parents were tested during rabi 2012 for their mean performance and heterosis. The study revealed that on the basis of mean performance the parents IIHR-2754, IIHR-2864 and IIHR-2863 were superior for all characters of total inflorescences (48), number of fruits per kg (96.67), number of fruits per plant (498.67), acidity (0.459mg/100g), average fruit weight (31.05 g), yield per plot (53.33 kg), ascorbic acid (38.67 mg/100g), total carotenoids (15.024 mg/100g) and Lycopene (6.97 mg/100g). However, the conclusion of result is crosses IIHR-2754 × IIHR-2866 and IIHR-2754 × IIHR-2860 were the best heterotic hybrids with respect to yield and yield related characters.

Pitchaimuthu M.,IIHR | Lingaiah H.B.,University of Horticultural science | Sriram S.,IIHR
Electronic Journal of Plant Breeding | Year: 2017

Forty one genotypes of ridge gourd were evaluated in augmented design with three checks. Analysis of variance revealed significant differences among genotypes for all the traits. High PCV, GCV, heritability, genetic advance were observed for number of branches at 45 and 90 DAS, nodes up to first pistillate flower appearance, number of fruits per vine, average fruit weight, fruit length, fruit yield per vine, Per cent Disease Index (PDI) for downy mildew at 45, 60 and 75 DAS and fruit fly incidence. Positive and significant association was observed for fruit yield per vine with vine length at 45 and 90 DAS, number of branches at 45 and 90 DAS number of fruits per vine, fruit length. Fruit yield per vine was negative and significantly associated with days to first male flowering, nodes up to first female flowering, days to first harvest, flesh thickness, days to first appearance of downy mildew symptoms and per cent disease index for downy mildew. In open field screening for downy mildew has led to identification of two resistant genotypes (COHRG-9 and COHB-32), two moderately resistant lines (COHB-10 and COHB-40) and one was highly susceptible (COHB-8) whereas remaining genotypes were exhibited moderately susceptible and susceptible reaction to downy mildew in ridge gourd.

Souravi K.,IIHR | Rajasekharan P.E.,IIHR
International Journal of Pharma and Bio Sciences | Year: 2015

Decalepis hemiltonii is an endemic and threatened medicinal plant known for its medicinal value. It is distributed in peninsular India and prefers to grow along rocky slopes and rock crevices. It has wide spread uses that include its common usage as a health drink. Apart from this, it has got antimicrobial, antidiabetic, antioxidant, antiinflammatory, chemo protective, cytoprotective, insecticidal, neuroprotective and hepatoprotective properties. As far as its phytochemistry is concerned, it is found to contain 2-hydroxy-4-methoxy benzaldehyde (HMB) in abundant quantity which has been already widely studied for its role in medicinal properties. The review aims to provide sufficient baseline information for further research on this medicinal plant.

Mir K.A.,Punjab Agricultural University | Dhatt A.S.,Punjab Agricultural University | Sidhu A.S.,IIHR
Indian Journal of Horticulture | Year: 2011

Brinjal were regenerated from callus derived from hypocotyl, cotyledon and root explants of five genotypes, namely Punjab Barsati, Punjab Sadabahar, Jamuni Gola, PBSR-11 and BB-93C on MS medium containing different concentrations of IAA and BAP. A combination of 2.5 mg/l IAA + 0.5 mg/l BAP was found optimum for adventitious shoot induction from all explants. Genotype, explant and genotype x explant interaction showed highly significant effects on organogensis. Among genotypes, PBSR-11 showed maximum response for organogenesis (79.43%). However, among explants, cotyledon was significantly better than hypocotyl and root. Plants regenerated via adventitious shoots were rooted on half-strength MS basal medium in vitro.

Sangeetha C.G.,Center for Post Graduate Studies | Rawal R.D.,IIHR
African Journal of Biotechnology | Year: 2010

Anthracnose caused by Colletotrichum gloeosporioides (Penz.) Penz. and Sacc. is one of the most important diseases of mango. During survey, the disease samples of fruits affected by anthracnose were collected from Arambakam, Dapoli, Hassan, Hessarghatta, Lucknow, Raichur, Tiruvur and Tumkur, and isolations were made. Studies were conducted to find out the temperature requirement of different isolates by incubating them at 15, 20, 25 28 and 30°C. The study indicated that the temperature of 25°C was found to be good for the growth of Aramkabam, Lucknow and Tiruvur isolates. Maximum growth of Dapoli, Hessarghatta and Tumkur isolates were recorded at 28°C whereas 30°C supported good growth of Hassan and Raichur isolates, nine days after inoculation. As regards to sporulation, Dapoli, Hessarghatta and Raichur isolates were good at 28°C whereas, 25°C supported good sporulation of Lucknow and Tiruvur isolates. Hassan and Tumkur isolates showed moderate sporulation at 28°C and 25°C supported moderate sporulation of Arambakam.© 2010 Academic Journals.

Reddy A.B.,UAS | Patti M.S.,UAS | Reddy K.M.,IIHR | Venkataravanappa V.,IIHR
African Journal of Agricultural Research | Year: 2011

Tomato (Lycopersicon esculentum Mill.) is an important and most widely grown vegetable crop in India. The begomo viruses' affecting tomato in India is the most devastating and is a major limiting factor in the tomato production. The tomato leaf curl virus (ToLCV) was present in almost all fields of Belgaum, Dharwad and Haveri districts surveyed with the disease incidence ranged from 4-100% in rabi and was in severe form ranging from 60-100% during summer. All the five representative symptomatic samples collected from the different regions of North-Karnataka were found positive for polymerase chain reaction (PCR) amplification with specific primers for deoxyribonucleic acid (DNA); a component of tomato leaf curl Bangalore virus (ToLCBV). To examine the diversity of the sequences, phylogenetic trees were generated for the four CP sequences together with representative sequences available in gene Bank. The isolates under study clustered into two groups. The Dharwad isolate and Belgaum- 2 isolate were closely related (99.4% nucleotide similarity) and formed in to one cluster in which Haveri and Belgaum-1 isolates had comparatively less homology (97.30% nucleotide homology) between themselves and clustered into another sub group. The isolates under study had lowest nucleotide sequence homology of 53.50 to 53.90% with ToLCV 19.Patna (AJ 810358) followed by ToLCV 18.Malvastrum.Pa (AJ 810357) (53.50-54.00%), ToLCV 17. Nasik (AJ 810356) (53.90-54.30%), while they had highest homology of 92.40-96.00% with ToLCBV-AVT 1 (AY 428770). The results revealed that these isolates are entirely different from North Indian isolates and there is some variability within the isolates collected from a geographical location, indicating that there will be continuous variability in gemini viruses. ©2011 Academic Journals.

Muralidhara B.M.,ICAR Central Institute for Subtropical Horticulture | Reddy Y.T.N.,IIHR | Srilatha V.,Bangalore University | Akshitha H.J.,Indian Institute of Spices Research
International Journal of Fruit Science | Year: 2016

A field experiment was carried out at the Indian Institute of Horticultural Research, Bengaluru during 2011–12 to study the effect of seed coat removal on seed germination and vigor of polyembryonic mango seedlings. In seed coat removal, the cultivar Muvandan recorded the maximum germination percent (85.4%), extent of polyembryony (2.76), and maximum number of leaves (10.3), whereas Bappakkai recorded maximum plant height (22.4 cm), stem girth (0.64 cm), leaf area (249.2 cm2), fresh weight (18.5 g) and dry weight (8.4 g), vigor index-I (1831.5 cm), and vigor index-II (685.7 g). With respect to treatments, seed coat removal was superior in all of the parameters, namely, initiation of germination (16.7 days), germination percent (78.3%), extent of polyembryony (2.50), plant height (19.5 cm), stem girth (0.62 cm), number of leaves per plant (8.7), leaf area (288.3 cm2), fresh weight (16.2 g) and dry weight (7.3 g), vigor index-I (1559.0 cm), and vigor index-II (581.8 g) compared to seed coat intact. There were no significant differences among the interactions of different treatments and cultivars. © 2016 Taylor & Francis.

Bhagya H.P.,University of Agricultural Sciences, Bangalore | Lalithya K.A.,University of Horticultural science | Bharathi K.,IIHR
Indian Journal of Agricultural Research | Year: 2014

A study on the vegetative propagation of Vitex negundo (L.) was conducted in University of Agricultural Sciences, Bengaluru during 2010-11 with a four replicated factorial CRD. Single, double and triple node hardwood cuttings were treated with different growth hormone solutions and observations were recorded. The shoot parameters such as days taken to sprout (9 days), number of sprouts(3.23), length of the longest sprout (20.38 cm), fresh weight (3.6 g) and dry weight (0.88 g) of sprouts and the root parameters like time taken to root (30 days), number of roots (19.05), length of the longest root (21.75 cm), fresh weight (2.37 g) and dry weight (0.67 g) of roots were significantly higher in triple node stem cuttings treated with Indole Butyric Acid 3000 ppm. Thus triple node hardwood cuttings treated with 3000 ppm Indole Butyric Acid (IBA) obtained maximum rooting success.

Gopal K.,University of Agricultural Sciences, Bangalore | Krishna Reddy M.,IIHR | Reddy D.V.R.,Indian International Crops Research Institute for the Semi Arid Tropics | Muniyappa V.,University of Agricultural Sciences, Bangalore
Archives of Phytopathology and Plant Protection | Year: 2010

Peanut yellow spot virus (PYSV) was efficiently transmitted by Scirtothrips dorsalis Hood in groundnut. Larvae could acquire the virus in 30 min and the maximum percentage transmission of 43.8% by individual insects resulted following two days AAP. Single adult Thrip transmitted the virus after minimum IAP of 30 minutes. The percentage transmission (33.3%) increased linearly with an increase in IAP up to 1.5 days and maximum up to 55 h of IAP (36.1%). PYSV persistently transmitted more than 75% of their life span. © 2010 Taylor & Francis.

Naik P.,University of Agricultural Sciences, Bangalore | Narayana C.K.,IIHR
Plant Archives | Year: 2012

A field and laboratory experiment was conducted at Indian Institute of Horticulture Research, Bengaluru. Residual cabbage leaves (RCL) were collected after harvesting of heads. The left over leaves were collected and partitioned in to two; one was subjected for blanching and another unblanched. Then the leaves were oven dried at 60°C until they became crisp textured and ground to powder. The powder was used for further preparation of biscuit in different ratios 5, 7 and 10 per cent. The nutrient composition such as protein, carbohydrates, fat, total carotenoids, vitamin C and total antioxidants were estimated for unblanched and blanched RCL powder and their products. Blanching helped in increasing fibre, total carotinoids and total antioxidant activity but there was reduction in vitamin C content. A close perusal of data indicated that with the increase in RCL powder there was increase in all the nutrient components. All the fortified products were evaluated for sensory qualities such as texture, appearance, taste, crispness and overall acceptability for 100 score among different panelists but no significant differences were recorded among the treatments.

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