Browsing by Author "Augustine Jerard, B."

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    A coconut famer’s journey of enhanced profitability from Chhattisgarh's Bastar region
    (2024-07-01) Beena Singh; Rajesh Kumar Patel; Augustine Jerard, B.; Sumitha, S.
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    Analysis of genetic diversity among Indian Ocean coconut accessions through microsatellite markers
    (2016-03) Devakumar, K.; Neema Babu; Uma Maheswari, T.S.; Naganeeswaran, S.; Niral, V.; Augustine Jerard, B.
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    Analysis of population structure and genetic relatedness among root (wilt) disease-resistant and susceptible west coast tall coconut palms (Cocos nucifera) using microsatellite markers
    (2011-06) Devakumar, K.; Thomas, R.J.; Nair, R.V.; Augustine Jerard, B.; Rajesh, M.K.; Jacob, P.M.; Jayadev, K.; Parthasarathy, V.A.
    The population structures among the root (wilt) disease-resistant and susceptible coconut palms from 12 locations in the three disease-endemic districts of southern Kerala, were analyzed using nine microsatellite markers. The pair-wise population differentiation estimate (Fs) between the resistant and susceptible populations was 0.021. Two major populations and a subpopulation cluster were identified among the resistant palms. The analysis of genetic relatedness between the resistant mother palms showed that most of the palms located in a single locality shared sib relationship among them. The existence of close genetic relationship among resistant palms from Chengannur, Thiruvalla, Kottayam and Pavukkara localities in Kerala were reported. The results are discussed in terms of breeding strategies for increasing heterozygosity and obtaining the maximum number of disease-resistant seedlings.
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    Ball copra production and marketing
    (2024-12-01) Augustine Jerard, B.; Sumitha, S.; Subramanian, P.; Jagadeesha; G.S. Chandrasekhar; Sudhrashan G.K
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    Biometric analysis of diversity in Pacific Ocean coconut populations
    (Cord, 2002) Ratnambal, M.J.; Arunachalam, V.; Augustine Jerard, B.; Sarankumar Rizwal; Damodaran, V.
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    Climate Smart Coconut Genetic Resources
    (2024-07-01) Augustine Jerard, B.; Sumitha, S.
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    Coconut Climbing Devices and Dehuskers Drudgery Reducing tools for the Nicobarese Tribal Farmers of Bay Islands
    (2019-03) Ajit Arun Waman; Pooja Bohra; Augustine Jerard, B.; Maheswarappa, H.P.
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    Coconut varieties for more return
    (2017) Niral, V.; Augustine Jerard, B.; Chowdappa, P.
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    Coconut variety Kalpa Dhenu
    (2009) Niral, V.; Augustine Jerard, B.; Samsudeen, K.; Arunachalam, V.; Kumaran, P.M.; Ratnambal, M.J.; Rao, E.V.V.B.; Filial, R.V.; Satyabalan, K.; Nampoothiri, K.U.K.; Nair, M.K.; Bavappa, K.V.A.; Nair, R.V.; George V. Thomas; Kumar, M.; Meenakshi Ganesan, N.; Arulraj, S.
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    Coconut variety Kalpa Mitra
    (2009) Niral, V.; Augustine Jerard, B.; Samsudeen, K.; Arunachalam, V.; Kumaran, P.M.; Ratnambal, M.J.; Rao, E.V.V.B.; Filial, R.V.; Satyabalan, K.; Nampoothiri, K.U.K.; Nair, M.K.; Bavappa, K.V.A.; Nair, R.V.; George V. Thomas; Bandopadhyay, A.; Ghosh, D.K.; Hore, J.K.; Sarangi, A.; Mitra, S.K.; Chattopadhyay, P.K.; Maity, S.C.; Arulraj, S.
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    Coconut variety Kalpa Pratibha
    (2009-05) Niral, V.; Augustine Jerard, B.; Samsudeen, K.; Arunachalam, V.; Kumaran, P.M.; Ratnambal, M.J.; Rao, E.V.V.B.; Pillai, R.V.; Satyabalan, K.; Nampoothiri, K.U.K.; Nair, M.K.; Bavappa, K.V.A.; Nair, R.V.; George V. Thomas; Reddy, V.S.K.; Goutham, B.; Kalpana, M.; Raghava Rao, D.V.; Nageswarao, M.B.; Srinivasulu, B.; Vaithilingam, R.; Natarajan, C.; Kumar, M.; Meenakshi Ganesan, N.; Nagwekar, D.D.; Arulraj, S.;
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    Coconut: Origin, Domestication and Conservation
    (2010) George V. Thomas; Niral, V.; Augustine Jerard, B.
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    Collecting coconut germplasm from Karnataka, lndia
    (2000) Niral, V.; Samsudeen, K.; Augustine Jerard, B.; Kumaran, P.M.
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    Development of a Dwarf x Tall coconut hybrid 'Kalpa samrudhi'
    (2015-04) Augustine Jerard, B.; Niral, V.; Samsudeen, K.; Nair, R.V.; Jayabose, C.
    An evaluation trial conducted over 28 years on coconut hybrid combinations has resulted in identification of a superior, high yielding Dwarf x Tall hybrid, named as ‘Kalpa Samrudhi’ involving IND 058S as female parent and IND 069S as male parent. The results revealed that the hybrid is better performing over other hybrids and local control with higher fruit yield (117 fruits palm-1 year-1), high copra out turn (25.72 kg palm-1 year-1 or 4.5 t ha-1 year-1 copra) and estimated oil recovery of 3.04 tonnes ha-1 under rainfed conditions of Kerala. The palms of the hybrid are semi tall, take an average of 45 months for initiation of flowering under rainfed conditions, possess good tender nut water quality (TSS 6o Brix) and higher quantity (346 mL per tender nut). The tender nut water has Na content of 35.1 ppm and K content of 2370 ppm. The hybrid recorded 30.27 per cent more nut yield, 66.05 per cent more copra yield and 73.71 per cent more oil yield over another released Dwarf x Tall hybrid ‘Chandra Sankara’. The seedlings of the hybrid are more vigorous, producing higher number of leaves within 12 months, having higher leaf area and dry weight indicating precocity in growth and development. The flowering, morphological and fruit component traits of the hybrid were compared with parental palms. The characteristics of this hybrid and its performance indicate potential to increase the production and productivity of coconut.
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    Digital phenotyping of coconut and morphological traits associated with eriophyid mite (Aceria guerroronis Keifer) infestation
    (2013-12) Arunachalam, V.; Augustine Jerard, B.; Elain Apshara, S.; Jayabose, C.; Subaharan, K.; Ravikumar, N.; Palaniswami, C.
    Observations were recorded on traits associated with mite infestation related at two stages of button on six different coconut cultivars over three years. Highly significant correlation was found between mite damage score with color or weight of tepal. Step-wise multiple regression of the data analysis showed color of inner tepal as major trait associated with infestation by eriophyid mite. Other traits are ratio of tepal weight to tepal area, per cent of buttons with pink discoloration or with resin, tepals of regular aestivation and gap between fruit and tepal. Digital phenotype data of 83 image files were used to calculate color signature and correlated the same to mite damage score over three years. Red spectral values were found to vary from 14 to 251, green values to 12 to 237 and blue to vary from 5 to 183. Spectral values red max, green max, 3* Red + Green max had high significant negative correlation (>-0.4) with mite damage. Color and firmness of fruits and tepals of three coconut varieties were further analyzed where, fruits and tepals of COD variety showed high red/green (a* value of Hunterlab) >12. Firmness of 3 month old tepal and fruit of Benualim (BGRT) tall variety was (penetrometer reading >38) higher than other varieties.
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    Evaluation of coconut germplasm for fruit component traits and oil yield
    (2009) Niral, V.; Nair, R.V.; Augustine Jerard, B.; Samsudeen, K.; Ratnambal, M.J.
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    Genetic diversity in yellow dwarf populations of coconut assessed using RAPD markers
    (2008-03) Ritto Paul; Jiji George; Rajesh, M.K.; Augustine Jerard, B.; Niral, V.
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    Genetic diversity of Pterocarpus dalbergioides (Andaman Padauk) accessions of Andaman and Nicobar Islands
    (2023) Jaisankar, I.; Augustine Jerard, B.; Manasseh Moses. E; P.Simhachalam
    Forty three phenotypically superior accessions of Pterocarpus dalbergioides, identified from different locations of the Andaman and Nicobar Islands, were subjected to genetic diversity analysis using 26 polymerase chain reaction (PCR) markers [12 Random Amplified Polymorphic DNAs (RAPDs) and 14 Inter Simple Sequence Repeats (ISSRs)]. The percentage of polymorphic bands detected by ISSR and RAPD was 37.04 and 37.62%, respectively. RAPD primers OPN 04 and OPN 08 gave 53% & 63% polymorphism respectively. Among ISSR primers, (GACA)8G gave 100% polymorphism. Clustering pattern of accessions of Pterocarpus dalbergioides remained more or less similar in RAPD and combined data of RAPD and ISSR. Present study confirmed fair extent of genetic variation within the species even though it is exposed to a wide range of environmental conditions across Andaman and Nicobar Islands, India.
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    Germplasm and Incentives for Boosting Coconut Production: Case Studies from the Pacific Region and Some Other Countries
    (2018) Roland Bourdeix; Nat Tuivavalagi; Victor Mataora; Augustine Jerard, B.; Naheed Hussein
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    High-yielding coconut varieties
    (2011) Sankaran, M.; Damodaran, V.; Singh, D.R.; Srivastava, R.C.; Damodaran, T.; Jai Sankar, I.; Augustine Jerard, B.