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STUDIES ON SEX AND SEX MODIFICATION WITH SILVER NITRATE IN KAKROL (Momordica dioica Roxb)

KrishiKosh

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Title STUDIES ON SEX AND SEX MODIFICATION WITH SILVER NITRATE IN KAKROL (Momordica dioica Roxb)
 
Creator GALI PARIMALA
 
Contributor Dr. P. ASHOK
 
Subject morphological marker characters,toxicity symptoms ,wilting of vines
 
Description The present investigation entitled “Studies on sex and sex modification with silver nitrate in kakrol (Momordica dioica Roxb)” was carried out during kharif season of 2010-2011 at College of Horticulture, Venkataramannagudem, W.G Dist. The first experiment was carried out with 7 treatments i.e 100 ppm AgNO3, 200 ppm AgNO3, 300 ppm AgNO3, 400 ppm AgNO3, 500 ppm AgNO3, 600 ppm AgNO3 and control. Experiment was laid out in a randomized block design with three replications and the data on effect of different concentrations of silver nitrate on sex modification, growth characters, yield contributing characters and yield were recorded and statistically analyzed.
Another experiment was carried out to identify the morphological marker characters between male and female sex forms in kakrol. The male and female plants each of 10 were taken, observed morphological characters and evaluated the differences between male female sex forms and the results were analyzed through the two sample t-test.
Silver nitrate was sprayed at different concentrations on female plants at pre floral stage. As a result development of hermaphrodite was observed at 20 to 25 days after spraying. Spraying of silver nitrate at the rate of 600 ppm significantly affected the stamen length at 8th, 10th, and 12th day (7.80 mm, 8.60 mm, 8.66 mm) respectively and stigma length at 8th, 10th, and 12th day (8.06 mm, 9.73mm 10.0 mm) respectively over the other treatments. The lowest stamen length and stigma length were recorded with 100 ppm silver nitrate. The growth characters like calyx length at 8th, 10th and 12th day after spraying were (1.46 cm, 1.27 cm and 0.93 cm) respectively. Leaf area also recorded highest at 500 ppm AgNO3 i.e (2583.33) cm2. The yield characters like fruit diameter, fruit stalk length, individual fruit weight; number of seeds per fruit and fruit yield were found to be significant at 500 ppm silver nitrate application. The plants sprayed with 600 ppm silver nitrate were affected by toxicity symptoms i.e wilting of vines and scorching .
The second experiment results revealed that the plant height, internodal length, leaf margins, number of lobes, leaf shapes and days to appearance of first male and female flowers were found to be significant. By observing these characters we can differentiate between male and female plants. The plant height, internodal lengths were more in male plants than on female plants. The number of lobes in leaf was more in female plants. Male flower appear earlier than female flowers. The leaf shape of female plant was mostly mapple like where that of male plant was cordate and mapple.
The characters like leaf length, leaf width, petiole length, tendril length, leaf area were found to be non significant. Primary leaf shape, leaf colour were not differing in male and female sex forms . The morphological marker characters help in differentiating male and female sex forms of kakrol were plant height, internodal length, leaf margins, number of lobes, leaf shapes and days to appearance of first male and female flowers.
 
Date 2016-07-22T15:35:17Z
2016-07-22T15:35:17Z
2011-09
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69402
 
Language en
 
Format application/pdf
 
Publisher ANDHRA PRADESH HORTICULTURAL UNIVERSITY