Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/81978
Authors: Sanjeev Kumar
Advisor: B.S.Vyakaranahal
Title: Studies on hybrid seed production in tomato (lycopersicon esculentum mill.)
Publisher: UAS, Dharwad
Type: Thesis
Agrotags: Seed Science and Technology
Abstract: Studies on hybrid seed production in tomato (Lycopersicon esculentum Mill.) were carried out at the Main Agricultural Research Station, UAS, Dharwad during kharif 2006. An experiment was conducted to study the effect of crossing ratio and pollination time on seed yield and quality in tomato hybrid seed production with four crossing ratios (3:1,4:1,5:1 and 6:1) and six pollination time (7,8,9,10,11am and 12.00 noon). Significantly higher fruit set (44.32%), fruit yield/plant (1136.18g), seed yield/plant (7.38g), germination (85.47%), seedling vigour index (1353) recorded in crossing ratio of 4:1and lowest in 6:1. Among pollination treatments, pollination at 10.00 am recorded higher fruit set (43.02%), fruit yield/plant (1102.45g), seed yield/plant (7.66g), germination (86.58%) and vigour index (1387) lowest in 12.00 noon (31.73%, 702.56g, 5.80g, 82.06% and 1158, respectively). Among the combination of 4:1 crossing ratio with pollination at 10.00 am recorded significantly higher fruit set (57.15%), fruit yield/plant (1502.98), seed yield/plant (8.39g) and lowest values (16.76%, 536.38g and 4.69g, respectively) recorded in 6:1 crossing ratio with pollination at 12.00 noon. Another experiment was conducted to study the influence of growth regulators and fruit retention on seed yield and quality parameters with three growth regulators (GA3, NAA and control) and four fruit retention treatments (10,15,20 and all fruits/plant). Among growth regulators GA3 100 ppm recorded significantly higher fruit yield/plant (1206.01g), seed yield/plant (8.12 g) and germination (90.92%) and vigour index (1424) over control (1101.69g, 7.36g, 87.60% and 1301, respectively) Retention of all fruits recorded higher fruit yield (1824.79g) and seed yield/plant (11.38g) compared to 10,15 and 20 fruits. Germination (91.51%) and vigour index (1460) were significantly higher in 10 fruits per plant compared all fruits treatments. Among the treatment combinations, GA3 100 ppm with retention of all fruits recorded significantly higher fruit yield/plant (1898.10g), seed yield/plant (11.95g). vigour index (1501) was significantly higher in GA3 100 ppm with 10 fruits compared to other treatment combinations.
Subject: Seed Science and Technology
Theme: Studies on hybrid seed production in tomato (lycopersicon esculentum mill.)
Research Problem: Studies on hybrid seed production in tomato (lycopersicon esculentum mill.)
Issue Date: 2007
Appears in Collections:Thesis

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