Browsing by Author "Pillai, R.V."

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    Albinism in Coconut Seedlings
    (1959-10-10) Pandalai, K.M.; Pillai, R.V.
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    Coconut descriptors Part-1
    (2007-02-08) Ratnambal, M.J.; Nair, M.K.; Muralidharan, K.; Kumaran, P.M.; Rao, E.V.V.B.; Pillai, R.V.
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    Coconut seed production
    (2007-02-08) Pillai, R.V.
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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-Based Cropping System For Socio-Economic Benefits
    (2010-12) Thampan, P.K.; Pillai, R.V.
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    Current status of coconut genetic resources research in India
    (2007-02-08) Bhaskara Rao, E.V.V.; Pillai, R.V.; Ratnambal, M.J.
    In India coconut germplasm collection programme dates back to 1924, when some cultivars were introduced mainly from important coconut producing countries in Southeast Asia and Pacific Islands. These introductions formed the nucleus material for the crop improvement research programmes. Subsamples generated by collecting both open-pollinated and selfed seeds were assembled at Kasaragod in the forties which at present can be considered as the main germplasm holding. In the early fifties, systematic introductions of exotic germplasm as well as indigenous collections were undertaken. The present holding of 86 exotic and 40 indigenous accessions planted at Central Plantation Crops Research Institute, Kasaragod and World Coconut Germplasm Centre, Andamans forms probably the largest collection in the world. These collections comprise 102 tails and 24 dwarfs, with two accessions classified as semi-tails and one MAW A hybrid introduced from Ivory Coast. While the introductions were limited to few seednuts in each accession, the exotic collection from South Pacific consisted of 100 seednuts each. A limited number of subsamples of germplasm accessions (distinct types) are also being maintained in Agricultural University Research Centres in different coconut growing states. Efforts were made to characterise the germplasm based on the fruit component analysis. Characterisation of indigenous tall types also enabled identification of distinct indigenous types both in respect of morphological characters and fruit components. Efforts made in evaluation indicated the possibility of identifying the elite types by correlating the initial years yield with the stabilised yield.
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    Cytogenetic studies in the Genus Cocos- I. Chromosome number in C. austral is and C. nucifera L. vars. spicata and androgena
    (1960-09) Ninan, C.A.; Pillai, R.V.; Josy Joseph
    Chromosome numbers in Cocos australis Mart. (n = 15) and C. nucifera L. varieties spicata (n= 16) and andzogena (n=16) are reported for the first time. The -haploid number n= 15 in C. australis is a new number f&r the genus as also for the family Palmae and is believed to be an aneuploid, derivative of n=L6. Though the tribe Cocoineae of Palmae has been regarded as an instance of homogeneity in evolution, the present observation of n = 15 in C, austratis shows that numerical alterations of chromosomes have also played a role in evolution within the tribe.
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    Economic life-span of coconut hybrids
    (2007-02-08) Pillai, R.V.
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    Evaluation of coconut hybrids in rainfed conditions
    (2006) Kumaran, P.M.; Arunachalam, V.; Nampoothiri, K.U.K.; Pillai, R.V.; Ratnambal, M.J.; Niral, V.; Nampoothiri, C.G.N.
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    Evaluation of tendernut water in coconut cultivars
    (2007-02) Dhamodaran, S.; Ratnambal, M.J.; Chempakam, B.; Pillai, R.V.; Viraktamath, B.C.
    The tendernut water of 12 coconut cultivars was evaluated biochemically to find out a suitable tendernut cultivar. Biochemical evaluation indicated that Chowghat Orange Dwarf (COD) had the maximum amount of total sugars (7.0 g/100 ml) and reducing sugars (4.7g/100 ml) and low sodium and potassium content (20 and 2003 ppm respectively). Scores and weightage were given for tendernut characters following Andersons method and a maximum index score of 73 was given to COD. Four cultivars selected based on biochemical evaluation were subjected to organoleptic test by seven tasters following a non-parametric statistical method. This study also confirmed the superior tendernut quality of COD.
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    Goa can grove more coconuts
    (2007) Satyabalan, K.; Pillai, R.V.
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    Guidelines for establishing coconut seed gardens in India
    (2007-02) Bavappa, K.V.A.; Pillai, R.V.; Rethinam, P.
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    IND 030-Laccadive Micro Tall (IC0430669; INGR13060), a Coconut (Cocos nucifera) Germplasm with Cluster Bearing Heavy Bunches of Micro Nuts
    (2014) Niral, V.; Augustine Jerard, B.; Samsudeen, K.; Nair, R.V.; Jacob, P.M.; Devakumar, K.; Ratnambal, M.J.; Kumaran, P.M.; Bhaskara Rao, E.V.V.; Pillai, R.V.; George V. Thomas
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    Promising coconut cultivars and hybrids
    (1989) Pillai, R.V.; Dhamodaran, S.
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    Relationship Between Physiological Parameters and Nut Yield in Rainfed Coconut Genotypes
    (1990) Rajagopal, V.; Kasturi Bai, K.V.; Pillai, R.V.; Vijayakumar, K.
    Physiological parameters like leaf diffusive resistance (SR), transpiration rate (TR), leaf water potential (WP) and epicuticular wax content (ECW) were employed in screening for drought tolerance in coconut genotypes comprising 10 tails, 6 dwarfs and 7 hybrids. The nut yield of these genotypes recorded over a period of four consecutive years was plotted against each of the above characters. There was significant correlation between the physiological parameters and yield performance in that some of the genotypes which were identified as drought tolerant also proved to be good yielders. The present investigation thus highlightsthe significance of using the physiological characters in screening for drought tolerant varieties with the ultimate objective of aiding the breeding programme in coconut.
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    Relative Drought Tolerance And Productivity Of Released Coconut Hybrids
    (1988) Bhaskara Rao, E.V.V.; Pillai, R.V.; Jacob Mathew
    Eightyseven coconut hybrids comprising of 21 different Tall x Dwarf, 10 Dwarf x Tall, 51 Tall x Tall, 4 Dwarf x Dwarf and one three way hybrid were studied. Evaluation at 18th year based on cumulative yield, which is representative of true yield potential, was carried out and three hybrid combinations namely, Chandrasankara (CDO x WCT), Chandralaksha (LO x CDO) and Lakshaganga (LO x GB) were identified as superior hybrid combinations. These hybrid combinations gave 19 to 42% more yield over the commonly cultivated WCT. Among these three hybrids, Chandrasankara (CDO x WCT) was found to give 47% higher copra over WCT. Hybrids Lakshaganga (LO x GB) and Chandralaksha (LO x CDO) performed well under drought situations. The drought tolerance in these hybrids was identified to be the contribution from the female parent Lakshadweep Ordinary. The performance of these three hybrids in relation to other hybrid combinations and drought situations is discussed.
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    Studies On Photoperiodic Responsive Reaction In Coconut
    (1974) Pillai, R.V.; Nair, R.B.; Chacko Mathew; Bavappa, K.V.A.; Ramadasan, A.
    Coconut seedlings of West Coast Tall variety responded favourably to long day treatment during first year of the experimental period, butfailed to do so during the second year. Illumination ofplants throughout the night increased not only the vigour of the seedlings but also increased the chlorophyll fractions, besides promoting the initiation of inflorescence primordhim.