Genetic study for yield and quality traits in infra-specific mapping population of melon

Communications in Plant Sciences, vol 6, issues 3-4, p.61-65, 2016

Full title: Genetic study for yield and quality traits in infra-specific mapping population of melon

Authors: Smita Singh, Sudhakar Pandey, Richa Raghuwanshi, and Major Singh

Abstract: Heritability, inter-relationship and path coefficient studies were performed in an infra-specific cross between Snapmelon (Cucumis melo var. momordica) and muskmelon (Cucumis melo L.) to produce an array of 249 F3 families. A pattern of moderate to high, broad sense heritability was estimated for yield attributing fruit traits. Fruit weight exhibited highest heritability (90.3%) while ovary length and diameter showed lowest heritability. Positive and significant correlation of yield was found with fruit weight, number of fruits per plant, Fruit quality traits ascorbic acid content (Vitamin C) and fruit flesh pH showed positive correlation. Path analysis showed significant positive direct effect of number of fruits per plant and fruit weight on yield. Study on allelic interaction of fruit traits during early generation will allow selection of better inbred lines and variety development reducing the cost of advancement, space and time required for inbreeding large size population.

Keywords: Cucumis melo var. momordica, Ascorbic acid, Fruit weight, Path analysis, Correlation, Yield traits, Infra-specific cross, Population, TSS.

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Correlation analysis for yield and fiber quality traits in upland cotton

Communications in Plant Sciences, vol 6, issues 3-4, p.55-60, 2016

Full title: Correlation analysis for yield and fiber quality traits in upland cotton

Authors: Muhammad Yaqoob, Sajid Fiaz, and Babar Ijaz

Abstract: Yield and fiber quality are most important and complex trait as they depend on interaction of genetic architecture of plant and environment. To achieve this objective, two parents FH153, KZ191 and their F2 population were evaluated for the existence of inter-relationship of characters under study during 2014-2015, at University of Agriculture, Faisalabad. The experiment was carried out in a randomized complete block (RCB) design with three replications. Data were recorded for Plant height (cm), number of sympodial branches, number of monopodial branches, pedicel length (mm), number of bolls per plant, number of seed per boll, boll weight (g), ginning out turn (%), fiber fineness (μ/inch), staple length (mm), fiber strength (g/tex), seed cotton yield (g). The obtained data were analyzed through correlation analysis at 0.01 and 0.05 significance level. The traits under study showed considerable range of phenotypic variability. The parent FH153 had maximum mean value for all traits under observation expect fiber strength. The parent KZ191 showed maximum fiber strength (21.1 g/tex). The F2 population of parents (FH153×KZ191) had minimum results for all traits. The results also showed positive association of characters with each other except staple length showed negative association with monopodial branches per plant, fiber strength and seed cotton yield.

Keywords: Gossypium hirsutum, Correlation, Cotton, Fiber quality, Yield.

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Studies on weed diversity and its associated phytosociology under direct dry seeded rice systems

Communications in Plant Sciences, vol 6, issues 3-4, p.47-54, 2016

Full title: Studies on weed diversity and its associated phytosociology under direct dry seeded rice systems

Authors: Mantosh Kumar Sinha and Arnab Banerjee

Abstract: Chhattisgarh is commonly known as Bowl of rice where rice is grown as monocrop in the entire state whether soil is bhata, matasi, kanhar or black soil. Present study is based on the study of biodiversity of weeds  under Direct Dry Seeded Rice Systems in Koria District (C.G.) Study was conducted to assess the phytosociological studies of weed species in paddy  field at Baikunthpur, Koriya district, Chattisgarh. A total of 43 genera and 9 families of Dicotyledonae and 3 families of monocots and 1 Pteridophytes was also observed and 43 weed species were identified Ratio of Sedges: (Grasses:Broad-leaved weeds was calculated as 9:12:18 Ratio) under direct dry seeded rice systems. The results obtained indicated that Echinochloa colona, Cyperus iria and Cynodon dactylon were the most frequent in 2007; E. colona and C. iria were the most frequent in 2008 and 2009. The importance value index (IVI) revealed that the most important weeds within the community were Poaceae and Cyperaceae. Out of 12 angiosperm families the predominance was shown by monocot families Cyperaceae and Poaceae having and weed species, respectively. The pteridophyta family Marsileaceae was represented by 1 weed species.

Keywords: Weed, Paddy cropping system, Diversity, Koriya-Chattisgarh.

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Irrigation optimized of Cedrella fissilis seedlings

Communications in Plant Sciences, vol 6, issues 3-4, p.39-45, 2016

Full title: Irrigation optimized of Cedrella fissilis seedlings

Authors: Ângela Simone Freitag Lima, Toshio Nishijima, Weslley Wilker Corrêa Morais, and Antônio Natal Gonçalves

Abstract: The aim of this study was to evaluate the influence of irrigation intensity in development of Cedrella fissilis seedlings in the greenhouse. The statistical design was randomized blocks, arranged in a  bi-factorial design with split plot with three replications. As main plot was characterized for irrigation frequencies (treatments): T1 – one time irrigation daily (at 11h00min); T2 – two times irrigation daily (at 11h00min and 19h00min); T3 – three times irrigation daily (at 07 h00min, 11h00min, and 19h00min) and T4 – four times irrigation daily (at 07h00min, 11h00min, 15h00min, and 19h00min) and as a sub-portion eight times week assessment, and an eighth hardening phase. For the experiment was used a system of localized irrigation, consisting of: pump, irrigation nozzles, tubes and valves. The seedlings were grown in plastic containers (tubes) suspended for PVC trays. Data were collected weekly, obtaining the height and diameter of the seedlings, dry mass production and the number of sheets in each evaluation. After the analysis it was concluded that the frequency of the three irrigations per day showed the C. fissilis seedlings with better development and able to go to the field.

Keywords: Cedar, Water, Optimization, Biomass, Development.

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Predicting red cypress vine leaf area by a linear equation

Communications in Plant Sciences, vol 6, issues 3-4, p.35-37, 2016

Full title: Predicting red cypress vine leaf area by a linear equation

Authors: Elise Antero Alves and Leonardo Bianco de Carvalho

Abstract: We aimed to determine a linear equation to predict the leaf area of Ipomoea quamoclit L. (red cypress vine), an important weed infesting perennial crops in Brazil and worldwide, as a function of leaf blade length and width. Leaves with no injuries were collect in several ecosystems. We electronically measured leaf blade maximum length through principal nervure (LBL), leaf blade maximum width perpendicular to principal nervure (LBW), and leaf blade area (LA), and then we calculated the product of LBL and LBW. A linear regression analysis performed to test the relation of LA and LBLxLBW. In addition, the Shapiro-Wilk test performed to test normality of regression residuals. The leaf area of red cypress vine could be calculated as a function of the product of leaf blade length and leaf blade width, by using the equation LA=11.987+3.6439*LBLxLBW.

Keywords: Ipomoea quamoclit, Leaf area, Non-linear estimation, Plant growth, Biometry.

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Studies on ethno medicinal plant diversity in an urban area – a case study

Communications in Plant Sciences, vol 6, issues 3-4, p.27-34, 2016

Full title: Studies on ethno medicinal plant diversity in an urban area – a case study

Authors: Sudipta Biswas and Arnab Banerjee

Abstract: The present study deals with the Ethno-medicinal plants used by the local communities in Santragachhi area, under Howrah Municipal Corporation, ward no. 38, District Howrah, West Bengal, India. An ethno medicinal survey was carried out the use of medicinal plants in Santragachi region. The information was gathered from the local community people using an integrated approach botanical collections, group discussion and interview with questionnaire during 2012-2013. Among 50 informants interviewed, 10 were tribal practitioners. A total of 53 genera and 33 families are documented. In most of case, fresh parts of the plants were used for the preparation of medicine. The results further revealed that the natives of this area are not very much practiced in using the medicinal plants in the treatment of human illness. The study area is delimited by number of wetlands and the people collect the aquatic plants by their habitual knowledge as food resources. But due to expansion of city area, road construction causes loss of plant diversity and random exploitation of natural resources many valuable medicinal plants are at the stage of extinction. The present study documented ethno medicinal plants were mostly used for treatment of various diseases.

Keywords: Santragachi, West Bengal India, Traditional Knowlege, Disease, Phytodiversity.

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Sources, survival and transmission of Cryptosporiopsis sp., leaf and nut blight pathogen of cashew (Anacardium occidentale Linn)

Communications in Plant Sciences, vol 6, issues 1-2, p.19-25, 2016

Full title: Sources, survival and transmission of Cryptosporiopsis sp., leaf and nut blight pathogen of cashew (Anacardium occidentale Linn)

Author: Menge Dominic and Shamte Shomari

Abstract: The germination of conidia was studied from 2 hours to 16 hours after incubation at an interval of two hours period. The germination of macroconidia microscopically was followed to understand the timing of key events. Ten infected cashew nuts were placed each on a Petri dish containing malt extract agar and incubated at 27 °C for 10 days. Cryptosporiopsis sp. pathogen was detected in nut samples of cashew clones. Leaf and nut blight pathogen remained viable up to one year in plant debris stored under laboratory condition at a minimum temperature range from 4 to 5 °C. There was a rapid population decline on viable counts of Cryptosporiopsis sp. recovered from sterile and unsterile soil after various periods of time. In debris buried at a depth of 7 cm in sterile or unsterile soil they survived for four months with 8% and 5% of disease samples with viable pathogen.  Saprophytic survival capacity of the fungus Cryptosporiopsis sp. in cashew field revealed that the pathogen survival was 80% up to four months of incubation but fell to 40% after 6 months. It was demonstrated that plant debris, soil and nuts could harbour sufficient inoculum to cause disease in new plants.

Keywords: Survival, Fungus, Viability, Conidia, Germination.

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