ETHREL STIMULATION OF INFLORESCENCE SAP FLOW IN TAPPED COCONUT (<i>COCOS NUCIFERA</i>) PALMS

Ranasinghe, C. S.; Waidyanatha, U. P. de S.

doi:10.1017/s0014479702001217

Cited by 5 publications

(4 citation statements)

References 8 publications

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“…The nut yield of NP-I and NP-II palms was recorded at monthly intervals. SP palms were tapped according to the technique described by Ranasinghe and Waidyanatha (2003). A thin slice of the spadix was pared transversely, twice a day, morning (7.00-9.00 hrs) and evening (16.00-18.00 hrs).…”

Section: Application Of Treatments and Data Collectionmentioning

confidence: 99%

“…Sucrose being the predominant carbon source (12-18%) in the sap, the total carbon removed as sucrose was taken as the total carbon removed by the sap or toddy (Ranasinghe and Waidyanatha, 2003).…”

Section: Determination Of Carbon Removal By Nuts and Sapmentioning

confidence: 99%

“…Toddy production brings much higher profits to growers than nut production (Ranasinghe et al, 1999). Toddy yields can be increased by applying Ethrel to the axil of the inflorescence (Ranasinghe and Waidyanatha, 2003). Coconut varieties, seasons and management factors have a considerable influence on toddy yields (Nathanael, 1966;Ranasinghe, 1997).…”

Section: Introductionmentioning

confidence: 99%

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Photosynthetic Assimilation, Carbohydrates in Vegetative Organs and Carbon Removal in Nut-Producing and Sap-Producing Coconut Palms

Ranasinghe¹,

Silva

2009

COCOS

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The net assimilation rate, carbohydrate content in leaf and trunk tissues and quantum of carbon removed in sap-producing (SP) and nut-producing (NP) coconut palms were compared. The correlations between sap (toddy) yields of SP palms, and their leaf and trunk carbohydrate content; net assimilation rate; and the pre-tapping phase nut yields, were investigated as possible criteria for selecting coconut palms with potential for high toddy yields. Thirty-five-year-old coconut palms of the Tall variety (Cocos nucifera L., var. typica), at Bandirippuwa Estate, Lunuwila, Sri Lanka were used for the study. Total soluble sugar content (TSS) in leaf and trunk tissues was higher (62-73 mg g dw -1 ) than their starch content (24-41 mg g dw -1 ) in both SP and NP palms. In SP palms, TSS of leaf tissue was higher, and trunk tissue was lower, than in NP palms. The total carbohydrate (TC) content in the trunk was generally higher than in leaves of both SP and NP palms. In SP palms, the ratio of TSS : starch was higher in leaves, and lower in the trunk, than in NP palms. Net assimilation rates and carbon removal by the produce (nut or sap) was similar in NP and SP palms.There was no significant correlation between sap yields and TSS and starch contents of leaf or trunk tissues of palms, before and during tapping; and the nut yields before; and the NAR during tapping. These parameters are therefore not of predictive value for selecting coconut palms for high sap yield.

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Section: Application Of Treatments and Data Collectionmentioning

confidence: 99%

Section: Determination Of Carbon Removal By Nuts and Sapmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Photosynthetic Assimilation, Carbohydrates in Vegetative Organs and Carbon Removal in Nut-Producing and Sap-Producing Coconut Palms

Ranasinghe¹,

Silva

2009

COCOS

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“…Coconut oil occupies an important position in the international market (Buschena and Perloff, 1991) showing potential application as a biofuel (Tan et al, 2004;Cloin, 2007). The inflorescence sap has been used for production of sugar (Levang, 1988;Ranasinghe and Waidyanatha, 2003). The timber has many applications such as in the fabrication of poles, windows, wooden floors, doors and many other wooden articles, and the leaves are used as a covering of huts and simple houses (Mathew et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Ecophysiology of coconut palm under water stress

Gomes

Prado

2007

Braz. J. Plant Physiol.

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Coconut palm is of great social and economic importance for millions of people in the tropics and subtropics. Drought is one of the main environmental factors that limit coconut productivity. In this review, physiological and morphological data are presented in an integrated perspective to provide a holistic view of the behavior of coconut trees facing water deficit under both field and controlled conditions. Great capacity to produce homorhizic roots capable of searching continuously for water and nutrients and high protoplasmic tolerance in leaves allows the coconut tree to endure water deficit. High membrane stability, osmoprotection, osmoregulation and enhanced activity of antioxidant enzymes are characteristics often found in leaves of drought-stressed coconut trees. Information on leaf gas exchange, leaf water potential, water-use efficiency and stomatal behavior was compiled highlighting the differences among cultivars and hybrids under water stress. Genotypic differences in physiological and morphological traits can largely explain the agronomic performance of field-grown coconut trees under drought conditions.

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Emerging Technologies for Processing and Preservation of Coconut Inflorescence Sap

Baskaran,

Radhakrishnan

2024

Preservation and Authentication of Coconut Products

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ETHREL STIMULATION OF INFLORESCENCE SAP FLOW IN TAPPED COCONUT (COCOS NUCIFERA) PALMS

Cited by 5 publications

References 8 publications

Photosynthetic Assimilation, Carbohydrates in Vegetative Organs and Carbon Removal in Nut-Producing and Sap-Producing Coconut Palms

Photosynthetic Assimilation, Carbohydrates in Vegetative Organs and Carbon Removal in Nut-Producing and Sap-Producing Coconut Palms

Ecophysiology of coconut palm under water stress

Emerging Technologies for Processing and Preservation of Coconut Inflorescence Sap

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