Variations in the Number of Seeds and Physical Characteristics of Teak Fruits of Nilambur Forest Division, Kerala
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Authors
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C.M. JIJEESH
College of Forestry, Kerala Agricultural University, Thrissur 680 656
Author
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K. SUDHAKARA
College of Forestry, Kerala Agricultural University, Thrissur 680 656
Author
Keywords:
Teak fruits, seed size, plantation, Tectona grandisAbstract
A study was conducted during 2002-2003 to determine the natural variability of teak (Tectona grandis Linn.f.) fruits belonging to different, plantations in Nilambur Division, Kerala and the influence of fruit size on the number of seeds. Teak fruits were collected from the Cherupuzha, Nellikutha and Chathamparai plantations of Nilambur Forest Division. One kg of fruits in ten replications were sampled from each plantation and graded using sieve of 6-9 mm, 9-12 mm, 12-15 mm, 15-18 mm and >18 mm on the basis of fruit size. For studying the variation between different plantation sites and size grades within each plantation, two factor nested analysis of variance was done. Frequency distribution of number and weight of fruits in each size grade followed a normal distribution pattern. The number and weight of large fruits was more in Cherupuzha plantation only. Fruits of size >18 mm were present in Cherupuzha plantation only but in lowest frequency. In other plantations lowest frequency was in the 6-9 mm size grade. The correlation between maximum and minimum width of fruits was significant and positive. Plantations did not influence significantly the volume and weight of fruits. Largest frequency of empty fruits was in the 6-9 mm grade in all the plantations. The study confirmed that, the number of seeds increased with increase in fruit size.
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References
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