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Researcher Hadvani, V. G.
Advisor Chovatia, R. S.
Source KrishiKosh-Indian National Agricultural Research System
Content type Text
Educational Degree Master of Science (M.Sc.)
Publisher JAU
File Format PDF
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Light & infrared & ultraviolet phenomena
Subject Keyword Horticulture ♦ Effect of Plant Growth Regulators On Growth ♦ Flowering ♦ Yield and Quality of Muskmelon (cucumis Melo Linn.) Cv. Rasmadhuri
Abstract A field experiment entitled, “Effect of plant growth regulators on growth, flowering, yield and quality of muskmelon (Cucumis melo Linn.) cv. Rasmadhuri†was conducted at Fruit Research Station, “Lalbaug†, Department of Horticulture, College of Agriculture, Junagadh Agricultural University, Junagadh during summer 2009. The experiment was laid out in Randomized Block Design with three replications. The experiment included ten treatments; namely three concentrations each of GA3 (10, 15 and 20 ppm), Ethrel (100, 300 and 500 ppm) and MH (100, 200 and 300 ppm) and control (water spray). Two sprays of plant growth regulators were done at 2nd and 4th true leaf stages. The results of experiment revealed that growth characters such as length of main axis (251 cm) and number of branches (16.70/vine) were the highest with GA3 20 ppm. Maximum internodal length (11.23 cm) was recorded in GA3 20 ppm. While minimum length of main axis (140 cm), minimum number of branches (8.50) and minimum internodal length (9.20 cm) were noted in control treatment. As regard to flowering, lowest days to first female flower (49.00) were noted in Ethrel 200 ppm. While minimum days to first male flower (45.03) and hermaphrodite flower (51.90) appearance were noted in Ethrel 300 ppm. Maximum days to first male flower (63.33) and hermaphrodite flower (70.27) appearance were noted in GA3 20 ppm treatment. The lowest female:male sex ratio 1:2.01 was registered in MH 300 ppm treatment. The yield characters such as fruit girth (35.18 cm) and average fruit weight (564.67g) were the highest in GA3 20 ppm. In case of number of fruits and fruit yield, MH 300 ppm produced the highest number (2.45/vine) and yield (1.89 kg/vine). Similarly the highest fruit yield 18907.67 kg/ha was also recorded in MH 300 ppm. With economic point of view, MH 300 ppm resulted in the highest net return (Rs.97924/ha.) and CBR 1:3.84. The quality characters such as highest total sugars (15.40 %) and reducing sugar (5.25 %) were noted in MH 300 ppm. The highest ascorbic acid (29.90mg/100g) and lowest acidity (0.36 %) were observed in MH 300 ppm. The total soluble solid (12.14 %) was recorded maximum in MH 200 ppm. In regards to Organoleptic score, various levels of plant growth regulators did not significantly influence on the flavour and texture of muskmelon fruit pulp. Significantly the highest taste, colour and cumulative score of muskmelon pulp (9.20, 9.17 and 9.15, respectively) was recorded in treatment MH 300 ppm, while the minimum taste, colour and cumulative score of muskmelon pulp (7.33, 6.80 and 7.50, respectively) was noted in the treatment control. It is concluded that application of MH 300 ppm significantly suppressed the length of main axis and increased the number of branches, reduced days to first female flower appearance. Whereas increased number of female flowers, lowered female:male sex ratio, enhanced fruit girth and number of fruits per vine, and resultantly produced the highest fruit yield. Similarly, with economic point of view, MH 300 ppm gave the highest net return (97924 Rs./ha) and CBR (1:3.84).
Educational Use Research
Education Level UG and PG
Learning Resource Type Thesis
Publisher Place Junagadh
Size (in Bytes) 140.07 MB
Page Count 157