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International Journal of Applied Agricultural & Horticultural Sciences
  • 29 April, 2024
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Frequency : Bimonthly
Language : English
DOI Prefix : 10.37322
P-ISSN : 0974-0775
E-ISSN : 2582-4198
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Vol. 1 (3) : May-June 2010 issue
Green Farming Vol. 1 (3) : 239-242 (May-June, 2010) (New Series)
Studies on floral biology of local malta [Citrus sinensis (L. Osbeck)] II. Pollen studies, receptivity of stigma and mode of pollination
MANJU1* and S.S. RAWAT2
Department of Horticulture, H.N. Bahuguna, Garhwal University, Srinagar (Garhwal) - 246 174 (Uttarakhand)
Designation :  
1Lecturer, 2Professor
Subject : Fruit Science and Pomology
Paper No. :
Total Pages : 4
Received :
Revised accepted :
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Citation :

MANJU and S.S. RAWAT. 2010. Studies on floral biology of local malta [Citrus sinensis (L. Osbeck)] II. Pollen studies, receptivity of stigma and mode of pollination. Green Farming Vol. 1 (3) : 239-242 ; May-June, 2010  (New Series)

ABSTRACT
The pollen grains of local malta were found to be oblong under dry condition and glycerine jelly, and round in water and acetocarmine. The pollen viability was recorded 85.27% with acetocarmine staining. Fifteen per cent sucrose solution exhibited the highest pollen germination (46.67%) and longest pollen tube (513.24µ), after 24 hours of initiation of experiment. At room temperature and uncontrolled relative humidity, the pollen grains were observed viable up to 7 days with 34.72% germinability. Peak period (100%) of stigmatic receptivity was observed one day before to one day after anthesis. Honey bees (Apis mellifera, A. indica and A. dorsata) were observed the most important insects to pollinate this fruit. Among the various methods of pollination the maximum fruit-set (40.00%) has been recorded under hand self-pollination.
Key words :
Citrus sinensis, Germination, Pollen, Pollination, Receptivity, Sweet orange.