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Item Orchid seed germination and carbohydrate mobilization pattern(Kerala Agricultural University, 1986) Ramachandran Nair, S; Fojasingh; Shyama Sundara JoshiThe mobilization pattern of carbohydrate is quite specific in orchid seedlings. Its movement in the PLB is acropetal and in the pseudobulb is basipetal, A neutral zone is formed in between the two which lacks mobilization.Item Heliothis armigera, a new pest of bittergourd(Kerala Agricultural University, 1996) Maicykutty P Mathew; Sheela Paul, T; Ramachandran Nair, S; Madhu, SItem Staggering of fruit production in Pineapple var. Mauritius(Kerala Agricultural University, 1996) Baby Latha, A K; Ramachandran Nair, S; Sathya Varma, P CStudies were undertaken to find out the feasibility of producing pineapple fruits of var. Mauritius throughout the year by adjusting the time of planting and growth regulator application. From the results it was observed that pineapple var. Mauritius can be planted throughout the year and harvesting is possible all the 12 months by adjusting the time of application of growth regulator. However, planting in August was the best as far as the fruit weight with crown as well as without crown is concerned. The fruit size was found to be significantly reduced by applying the growth regulator at six months after planting. The reduction in fruit size may be correlated to the reduced number of leaves in the treatment plants at the time of application, irrespective of the time of planting. The best time for application of growth regulator was found to be at eight months after planting.Item Etiology of marbled disease of pineapple (Ananas Comosus L. Merr.)(Kerala Agricultural University, 1999) Sheela Paul, T; Nandini, K; Ramachandran Nair, S; James MathewItem Growth, flowering and yield potential of tissue culture banana (Musa AAB cv. Nendran)(Kerala Agricultural University, Vellanikara, 2001) Sheela, V L; Ramachandran Nair, SThe present experiment in split-split plot technique was laid out at the College of Agriculture, Vellayani during 1991-1993 to evaluate the growth, flowering and yield potential of tissue culture plants of Nendran banana Musa (AAB group) compared to plants from suckers. The initial establishment and early growth phase of tissue culture plants were comparable with that of the suckers. But their growth rate become faster during the later stages and ultimately they recorded an increase of 6.7 per cent in height, 11.92 per cent in girth and 3.35 leaves more than the plants from suckers. They showed less variability in time taken for flowering and recorded an increase in yield of 25.63 per cent compared to plants from suckers. The attributes responsible for the increase in yield were length of bunch, number of fingers and length and girth of finger.