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Seven genetically diverse parents of chickpea were crossed in five combinations (RSG-895 x RSG-888, RSG-888 x ICC-4958, IPC-94-94 x RSG-888, CSJD-901 x RSG-931 and BG-362 x RSG-931) to develop F 1 , F 2 and F 3 hybrid progenies. Five generations viz., P 1 , P 2 , F 1 , F 2 and F 3 were grown in a compact family block design under irrigated and rainfed conditions to estimate the gene effects for yield and yield components. Scaling test 'C' and 'D' as well as joint scaling test revealed presence of epistatic in all the crosses for all the characters studied viz., days to 50% flowering, days to maturity, plant height, fruiting branches per plant, pods per plant, seeds per pod, biological yield per plant, seed yield per plant, harvest index, 100-seed weight and protein content under both the conditions. Both main effects additive (d) and dominance (h) were important for all the characters in all the crosses under both the conditions except 100-seed weight, where only additive effect was found important. Both additive x additive (i) and dominance x dominance (l) interaction effects were also important for all the characters in all the crosses under both the conditions except 100-seed weight, where only additive x additive interaction was found important. Generally, the magnitudes of dominance (h) and dominance x dominance (l) were prevailed over additive (d) and additive x additive (i) effects, respectively. Duplicate type of epistasis was observed in all the cases, where epistasis was established. Thus, it can be concluded that additive, dominance, additive x additive (i) and dominance x dominance (l) effects contributed significantly to the inheritance of various component characters in chickpea under both irrigated and rainfed conditions. These results implies the use of recurrent selection by way of intermating the desirable segregants followed by selection or biparental approach/intermating of segregants in early segregating generations for improvement of these components characters in chickpea under both the conditions.

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Aim: Methodology:Results: Interpretation:The commercial guava cultivars though having high yield potential, lack the traits of commerce. In other words, development of high yielding guava variety having coloured skin and flesh, with low seed content/soft seeds and better shelf life is need of an hour.The present study on hybridization was undertaken using commercial varieties like Allahabad Safeda, Shweta and the varieties with potential traits likeArka Kiran, Purple guava and Lalit.Among different crosses, the maximum fruit length (51.25 mm), fruit width (48.70 mm) and fruit weight (71.84 g) were recorded in Allahabad Safeda x Shweta. The lowest number of seeds per fruit (171), minimum seed weight per fruit (1.070 g), seed hardness (13.86 Kg cm ) and highest total soluble solids (7.45 Brix) were recorded in Allahabad Safeda x Arka Kiran, whereas, the Allahabad Safeda x Purple guava fruits had significantly higher vitamin C (180.14 mg per 100 g fruit) content.To conclude, the optimum time of crossing involving potential guava germplasm has been standardized. Sufficient number of hybrids as a result of different cross combinations have been obtained, which are likely to have potential traits. The obtained hybrid seedlings were planted in the field.The putative hybrids thus generated have shown the variability in morphological traits and indicate hybridity.November 2017 Vol. 38O n l i n e C o p y D. Singh et al. 1342 Introduction Materials and MethodsGuava fruit is commonly designated as 'apple of the tropics'. It belongs to family which comprises about 150 genera and more than 5,650 species. Floral structure (Epigynous flower, with many stamens of various sizes), selfincompatibility, and heterozygous nature limit the scope of breeding programmes of guava. Germplasm across the genera and species are being used for hybridization studies. Distant hybridization involves crosses between different species of the same genus or different genera. Santos (2012) observed that pink and red guava accessions have a greater beneficial potential and should be targeted for breeding programs. Being a cross-pollinated species, substantial variability is available in guava propagated through seeds.There are a large number of cultivars in India, but only a few with commercial importance such as 'Allahabad Safeda' and L-49 (Sardar) have been identified for commercial cultivation; however, this fact does not affect the existence of a large number of breeding programs.Inter-specific hybridization between and has led to the development of hybrids (Negi 2007). Seedless varieties of guava have been found to be autotriploids (2n = 33); likewise, hybridization between and has also been reported (Landrum 1995). Elite commercial guava cultivars, round and pyriformed, were reciprocally crossed to develop hybrids and fruits after crossing were analyzed to explore metaxenial effects on fruit quality (Usman 2013).Morphological characters of guava accessions were observed on the basis of UPOV (International Union for the Protection of New V...