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Please use this identifier to cite or link to this item: http://krishi.icar.gov.in/jspui/handle/123456789/53523
Title: Assimilate partitioning behavior in relation to fruit growth in ‘Shahi’litchi
Other Titles: Not Available
Authors: Bikash Das
Vishal Nath
B R Jana
Pradip Dey
ICAR Data Use Licennce: http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf
Author's Affiliated institute: ICAR::Research Complex for Eastern Region
ICAR::Indian Agricultural Research Institute
ICAR::Indian Institute of Soil Science
Published/ Complete Date: 2011-09-01
Project Code: Not Available
Keywords: Litchi
Assimilate partitioning
Girdling
Publisher: Taylor and Francis
Citation: Bikash Das, BR Jana, P Dey, Vishal Nath. 2011. Assimilate partitioning behavior in relation to fruit growth in ‘Shahi’litchi. International Journal of Fruit Science, 11(1):88-98
Series/Report no.: Not Available;
Abstract/Description: Investigations were undertaken to develop a better understanding of assimilate partitioning behavior in litchi, with respect to the role of stored assimilates translocated from other sources in the plant during the fruiting season. The first experiment examined the fruit growth pattern in the litchi ‘Shahi’. The second experiment focused on the limitation of assimilate supply to litchi fruits by leaf removal and girdling. The third experiment was aimed at fulfilling the assimilate requirement of growing litchi bunches through current photosynthesis by foliar application of a photosynthesis enhancer (triacontanol). The fruits exhibited a sigmoidal growth pattern with a phase of rapid growth 40 to 60 days after fruit set. Irrespective of method or distance of source limitation, the maximum percent of fruit drop was observed when the source limitation treatments were imposed 30 days after fruit set. Source limitation at all the distances resulted in significant increases in percent of fruit drop over those with no source limitations. With respect to different treatments, all forms of source limitation resulted in significant increase in fruit drop over the control. The results suggest that a contribution of carbohydrate from current photosynthesis for partial fulfillment of total carbon demand of growing fruits is necessary. Only no limitation of current photosynthesis contributed towards 0% loss in fruit weight while a limitation of carbohydrate translocation (girdling) contributed towards an 8.5% loss in fruit weight. However, under the condition of limited carbohydrate translocation, restriction on current photosynthesis caused a 19.1% loss in average fruit weight. Studies on foliar application of photosynthesis enhancers (triacontanol) on fruit drop in litchi under restricted (girdled) and unrestricted translocation of assimilate from other parts of the plant were conducted. These indicated a reduction in the rate of fruit drop with an increase in the concentration of triacontanol in case of unrestricted translocation of assimilate. However, under restricted assimilate translocation, increasing concentrations of triacontanol did not result in reducing the percent of fruit drop. Hence, the study clearly indicated the major role of translocated assimilates from other plant parts in fulfilling the assimilate demand of growing fruits in litchi where current photosynthesis contributes partially towards assimilate demand.
Description: Not Available
ISSN: Not Available
Type(s) of content: Research Paper
Sponsors: Not Available
Language: English
Name of Journal: International Journal of Fruit Science
NAAS Rating: Not Available
Impact Factor: 1.359
Volume No.: 11
Page Number: 88-98
Name of the Division/Regional Station: FSRCHPR, Ranchi
Source, DOI or any other URL: https://doi.org/10.1080/15538362.2011.554055
URI: http://krishi.icar.gov.in/jspui/handle/123456789/53523
Appears in Collections:NRM-RCER-Publication

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