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STUDIES ON FUNCTIONAL MALE STEILITY IN TOMATO (Lycopersicon esculentum Mill.) AND ITS APPLICATION IN HYBRID SEED PRODUCTION

KrishiKosh

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Title STUDIES ON FUNCTIONAL MALE STEILITY IN TOMATO (Lycopersicon esculentum Mill.) AND ITS APPLICATION IN HYBRID SEED PRODUCTION
 
Creator MANJUNATHA. C
 
Contributor B.S. Tomar
 
Subject sowing, fruits, developmental stages, sets, vegetables, land resources, germinability, crossing over, hybrids, productivity
 
Description t-8158
Investigation entitled “Studies on functional male sterility in tomato
(Lycopersicon ecsculentum Mill.) and its application in hybrid seed production”
was conducted with the objectives for standardizing seed production technology in
functional male sterile line “Pusa Divya” hybrid in plains and to asses the factors
affecting pollen fertility, stigma receptivity, fruit and seed set and the quality of the
seeds produced in two dates of sowing and under two environmental conditions viz.
green house and open field. Different method and times of pollination and different
seed extraction methods were investigated.
Plant growth, fruit set, seed yield per fruit and seed quality were better in
polyhouse compare to field. Fruit set and seed yield per fruit and seed quality were
affected at both low and high temperature. Minimum temperature was critical as
pollen viability and fruit set drastically reduced when night temperature was less
than 110
C. The stigma became receptive and pollination was effective when mean
temperature was 18-200
C in open field and 20-220
C in polyhouse. There was
progressive decline in fruit set, seed yield per fruit and seed quality as the
temperature increased and RH decreased. Optimum temperature for fruit set seed
yield and seed quality is 19-200
c in field and 20-220
c in polyhouse. Fruit set, seed
yield and seed quality were better at the start of crossing period compare to at the
end of crossing period. More number of days available for crossing work in
polyhouse compared to field. October 15th sowing provided maximum days for
crossing work compare to November 15th sowing. Fruit maturity duration which
affects the seed quality was more at the start of crossing period and less towards the
end. Pollination at anthesis produced higher fruit and seed set. Stigma retained
receptivity up to 4 4 days in field and upto 5 days in polyhouse. Pollination at 9:00
a.m and 5:00 a.m are best for higher fruit set and seed yield per fruit. Repeated
pollination of same stigma produced higher fruit set and seed yield per fruit
compared to once pollinated. Fruit set per cent was same when pollination was
performed with freshly collected pollen, extracted pollen, one day ambient stored
pollen and 8 day stored pollen at 40
c. Fermentation for 24 hr and HCl @ 10 ml/kg
pulp for 30 minutes are the best for seed extraction in tomato. Functional male
sterility system was stable in plains also as there were no selfed fruits during entire
flowering period.
 
Date 2016-12-23T10:03:19Z
2016-12-23T10:03:19Z
2009
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/92341
 
Format application/pdf
 
Publisher SEED SCIENCE AND TECHNOLOGY