Coconut
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Item 12.75% rise in export of Indian coconut products(2015-08) Sebastian, K.S.Item 13.5% rise in export of Indian coconut products(2015-07) Sebastian, K.S.Item 16S rRNA interoperon sequence heterogeneity distinguishes strain populations of palm lethal yellowing phytoplasma in the Caribbean region(2002) Harrison, N.A.; Myrie, W.; Jones, P.; Carpio, M.L.; Castillo, M.; Doyle, M.M.; Oropeza, C.DNA of phytoplasmas in lethal yellowing (LY)-diseased palms was detected by a nested polymerase chain reaction (PCR) assay employing rRNA primer pair P1/P7 followed by primer pair LY16Sf/ LY16-23Sr. Polymorphisms revealed by Hinfl endonuclease digestion of rDNA products differentiated coconut-infecting phytoplasmas in Jamaica from those detected in palms in Florida, Honduras and Mexico. A three fragment profile was generated for rDNA from phytoplasmas infecting all 21 Jamaican palms whereas a five fragment profile was evident for phytoplasmas infecting the majority of Florida (20 of 21), Honduran (13 of 14) and Mexican (5 of 5) palms. The RFLP profile indicative of Florida LY phytoplasma was resolved by cloning into two patterns, one of three bands and the other of four bands, that together constituted the five fragment profile. The two patterns were attributed to presence of two sequence heterogeneous rRNA operons, rrnA and rrnB, in most phytoplasmas composing Florida, Honduran and Mexican LY strain populations. Unique three and four fragment RFLP profiles indicative of LY phytoplasmas infecting Howea forsteriana and coconut palm in Florida and Honduras, respectively, were also observed. By comparison, the Jamaican LY phytoplasma population uniformly contained one or possibly two identical rRNA operons. No correlation between rRNA interoperon heterogeneity and strain variation in virulence of the LY agent was evident from this study.Item 2012-13 -An year of accomplishments and triumphs(2013-04) Remany GopalakrishnanItem 20th World Coconut Day(2018-08) Jnanadevan, R.Item a-D-Galactosidase Deficiency in Coconut Endosperm: Its Possible Pleiotropic Effects in Makapuno(1984) Cesar V. Mujer; Dolores A. Ramirez; Evelyn Mae T. MendozaAbstract-a-D-Galactosidase (IX-D-galactoside galactohydrolase, EC 3.2,1.22) activity in the normal endosperm increased with age continually up to endosperm maturity, In contrast, makapuno IX-D-galactosidase was hardly detected in almost all stages of development except the last, where its activity was 8300-fold lower as compared to the normal. The possible role of IX-D-galactosidase in the formation of the mukapuno endosperm is discussed.Item Abscisic Acid and Related Compounds in Phloem Exudate of Yucca flaccida Haw. and Coconut (Cocos nucifera L.)(1980) Hoad, G.V.; Gaskin, P.hstract. Phloem sap collected from Yucca and cocopllt inflorescence stalks was shown to contain abscisic acid (ABA) and trace amounts of 2-trans ABA. In coconut sap, two compounds probably derived from ABA with m3SS spectra consistent with their being clihydrophaseic acid and either hydroxyphaseic acid or oxo-dihydrophaseic acid were also found to be presentItem Abscisic Acid and Related Compounds in Phloem Exudate of Yucca flaccida Haw. and Coconut (Cocos nucifera L.)(1980) Hoad, G.V.; Gaskin, P.Item Abscission of Control Pollinated Coconut Fruits: Preliminary Investigations into the Possible Role of Ethylene(2010) Owusu Nipah, J.; Safo-Kantanka, O.; Matthew J. DickinsonRecent advances in the spread of the Cape St Paul Wilt disease (CSPWD) necessitate a more rapid development of tolerant coconut types. Control pollination is the main method for producing legitimate coconutseeds for such breeding purposes. However, the process of bagging causes severe nut drop or abscission. Many scientists have implicated hormones as the primary regulators of organ abscission; with ethylene being particularly implicated. Unlike other plant hormones, which are mainly produced in other parts and transported to influence target organs, the production of ethylene could be initiated within the same organ, such as the fruit. This study was therefore undertaken to investigate the possible involvement -of ethylene in abscission after control pollination. Pollen from Vanuatu Tall (VTT) variety was used to cross emasculated Malayan Yellow Dwarf (MYD) inflorescence after isolation with bags. Trials were laid out in Completely Randomised and Split Plot designs, with specified replications. Two ethylene inhibitors, namely aminoethoxyvinylglycine (AVG) and silver thiosulphate (STS) were ~ed.. Five concentrations of AVG ranging from 2mg/1 to 30mg/1 were applied to inflorescences during and after bagging. AVG concentrations higher than 2 mg/1 resulted in significant reduction in abscission. Fruit yields up to five times that of ordinarily bagged treatments without AVG were recorded. Four concentrations of STS ranging between O.SmM 10mM applied in similar manner, however, did not result in any significant reduction in abscission. The results from AVG application strongly suggest the involvement of ethylene in the abscission of control pollinated coconut fruits.Item Abstract(1993)Item Achieve bigger nut size and higher copra output for better price realization(2014-03) Remany GopalakrishnanItem Achievements of Kerala Agricultural University in Plantation Crops Research Challenges, Future Prospects and Research Priorities(2010) Gopalakrishnan, T.R.; Balakrishnan, P.C.; Prasannakumari Amma; Jose Mathew; Sujatha, V.S.Item Acoustic impulse response of young coconut (Cocos nucifera L.) fruits in relation to maturity(2021) Rhey Marc Carrera Albalos; Delfin Coronado Suministrado; Kevin Fernandez Yaptenco; Erwin Perez QuilloyItem Activated to excel with Activated Carbon- the export opportunities(2015-09) Joshy JosephItem Adoption gap in coconut cultivation(2009-04) Mahadik, R.P.; Desai, A.N.; Nirban, A.J.Item Adsorption Equilibrium of Alkanes on a High Surface Area Activated Carbon Prepared from Brazilian Coconut Shells(2005) Krista S. Walton; Celio L. Cavalcante JR.; Douglas Levan, M.Adsorption equilibria of methane, ethane, and n-butane on a high surface area activated carbon prepared from Brazilian coconut shells is examined in this study. The material shows high capacities for the alkanes tested. A group-contribution theory is used to predict adsorption isotherms for all three components with very good accuracy employing one set of model parameters. The theory is also used to observe trends in isosteric heat of adsorption as a function of loading at various temperaturesItem Adsorption of methane in activated carbons obtained from coconut shells using H3PO4 chemical activation(2009) Rafael B. Rios; Wilton M. Silva, F.; Eurico B. Torres, A.; Diana C.S. Azevedo; Ceilo L. Cavalcante