Browsing by Author "Saraswathy, P"

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Cadmium content of plants as affected by soil application of cadmium and farm yard manure
(Kerala Agricultural University, Vellanikara, 2002) Usha, Mathew; Venugopal, V K; Saraswathy, P
Combining ability in okra (Abelmoschus esculentus [L.] Moench)
(Kerala Agricultural University, Vellanikara, 2001) Rajani, B; Manju, P; Manikantan Nair, P; Saraswathy, P
A study was conducted to estimate the combining ability of six genetically divergent parental strains of okra by diallel analysis with respect to yield and a few related attributes. The combining ability analysis by the Method I of Griffing's (1959) approach revealed that the parent NBPGR/TCR 861 was the best general combiner for single fruit weight and length and NBPGR/TCR 864 for yellow vein mosaic resistance. Among hybrids, NBPGR/TCR 893 x NBPGR/TCR 864 exhibited outstanding sea effect for yield while NBPGR/TCR 865 x NBPGR/TCR 438 and NBPGR/TCR 893 x NBPGR/TCR 861 were notable for single fruit weight, length and girth. The hybrid NBPGR/TCR 854 x NBPGR/TCR 865 showed maximum tolerance to YVM.
Correlation studies in black gram under partially shaded conditions
(Kerala Agricultural University, 1992) Saji T Abraham; Sreekumar, S G; Saraswathy, P; Gopinathan Nair, V; Manikantan Nair, P
Divergence analysis of morphological and quality traits in sugarcane
(Department of Statistics, College of Veterinary and Animal Sciences, Mannuthy, 1989) Santhi, T E; Saraswathy, P
Multivariate analytical techniques are found to be very useful in plant breeding research to explain the influence of various factors on the phenomenon under study. Factor analysis is found to be an appropriate tool to identify the factors of genetic divergence. D2 – analysis is helpful to group the divergent genotypes into various clusters when measurements on a number of related characters are available on a large number of genotypes such that the genotypes within a cluster are homogeneous with respect to these characters and heterogeneous between the clusters. The present study is aimed at identifying the factors of divergence in relation to morphological and quality traits in forty eight clones of sugarcane. The fifteen clones T.67172, Co.7717, Co.419, Coc.779, Co.7219, Coc.777, Ic.225, Co.6304, S - 99, Coc.773, Coc.772, Co.62198, Co.62101, Coc.778 and S – 77 are able to group into one cluster. Four more clusters are able to form respectively with five varieties (Co.658, Co.62175, S – 105, Co.6907, Co.995) in the second cluster, nine (F.1 – 2, Co.62174, S – 87, KHS 3296, Coc. 671, Co.7704, Co.785, CoM.7114, CoM.7125) in the third, seven (Co.6807, Co.1340, Co.527, S – 33, Co.6806, B. 37172, Co. 527 – M – 10) in the fourth and four varieties (Co.1307, CoA.7602, Coc.705, Co.453) in the fifth cluster. The remaining clones are not able to group. Among these clusters are utilized for factor analysis. A factor related to quality is extracted as the first factor in all the three clusters. The characters pol at 12th month, C.C.S. percentage, brix at 12th month, purity percentage and sugar yield per plot dominated this factor. Among these characters pol at 12th month, C.C.S. percentage and brix at 12th month are found to be more amenable to changes due to selection. The second factor is identified by the characters cane yield per plot, shoot count germination count and number of millable canes. Apart from these characters weight of cane is also included in this factor in cluster 1. The characters which are more amenable to change due to selection are cane yield per plot and shoot count. The characters are not common in the remaining four factors. These six factors are able to explain 66.84 percent, 79.44 percent and 87.41 percent of variation respectively in the first, third and fourth cluster.
Economic evaluation of rice cultivars under different nutrient levels
(Kerala Agricultural University, 1998) Sheela, K R; Thomas Alexander, V; Saraswathy, P
Economic evaluation of rice cultivars under different nutrient levels
(Kerala Agricultural University, 1998) Thomas Alexander, V; Sheela, K R; Saraswathy, P
Efficacy of prophylactic and curative sprayings on the control of bacterial blight of rice
(Kerala Agricultural University, Vellanikara, 2001) Mary, C A; Nair, S K; Saraswathy, P
Estimation of leaf area in greengram (Phaseolus Aureus Roxb) using linear parameters
(Kerala Agricultural University, 1978) Sreekumar, S O; Thomas, E J; Saraswathy, P; Mary K George
Genetic divergence in bhindi (Abelmoschus esculentus [L.] moench
(Kerala Agricultural University, 1994) Bindhu, K K; Saraswathy, P; Manju, P
Seventy genotypes of bhiiuli were subjected to D2 analysis based on 14 economic characters in order to classify them into group constellation. The 70 genotypes were found to fall into six clusters with 57 genotypes in cluster I, four in cluster II, three in cluster III, two in cluster IV, three in cluster V arid one in cluster VI. The distribution of the genotypes into six different clusters was not according to their places of origin showing that the genotypes forming one group were geographically diverse, while those obtained from the same region were genetically different. Cluster V showed high mean values for yield and major yield attributes indicating that it is superior to the rest of the clusters. Cluster I and IV were genetically closer while cluster II and VI were wider. Selection of parents from cluster II and VI for hybridisation is likely to give heterotic hybrids.
Influence of green fruit picking and nutrient sources on fruit production in okra (Abelmoschus esculentus (L.) moench)
(Kerala Agricultural University, 1998) Sheeba Rebecca Isaac; Pushpakumari, R; Saraswathy, P
Path analysis for harvest index in black gram
(Kerala Agricultural University, 1992) Saji T Abraham; Sreekumar, S G; Saraswathy, P; Gopinathan Nair, V; Manikantan Nair, P
Path analysis in green gram (Phaseqlus Aureus Roxb.)
(Kerala Agricultural University, 1979) Saraswathy, P; Sreekumar, S G; Thomas, E J
Seedling progeny analysis in coconut types
(Kerala Agricultural University, 1995) Manju, P; Gopimony, R; Nampoothiri, K U K; Saraswathy, P
The study was undertaken to identity prepotent palms from among five coconut types vi/.., three Komadan generations. West Coast Tall and Natural Cross Dwarf based on growth rate of seedlings at the 9th month of germination. For most of the seedling characters, Komadan generations (Manju, 1992) showed significant superiority over WCT and they behaved as a distinct group with regard to total leaf area over both WCT and NCD. They were also found to be significantly superior to WCT for seedling vigour index and number of seedlings with split leaves. The three Komadan generations were on par regarding recovery ot quality seedlings and were significantly superior to WCT. Based on this character, 20 per cent of the palms in Komadan were identified to be prepotent.
Stochastic models for the explanation of trend in production of rice in Kerala for the period 1957—1958 to 1971-1972
(Kerala Agricultural University, 1975) Saraswathy, P; Thomas, E J
Five different models were tried to explain the production of rice in terms of area (x), and period (0. The following results were obtained. A t yt = 946.2 x 1.022r with r = 0.80, y = 166.4 x 1 263* with i- = 0.84 A y ==287.9 x 1.172 X l.OOS1 with P ^ 0.84 A n O^RS^O t y{ := 925.47 . eU' with r = 0.64 and t A 0.032018 £ x. -0.231688 t with P = 0.66 yt = 925.47 . e 1 J The values of the coefficients of determination show that these models fit the data satisfactorily.
Survival of Xanthomonas oryzae pv. oryzae (ishiyama, 1922), Swings et al., 1990
(Kerala Agricultural University, Vellanikara, 2001) Nair, S K; Saraswathy, P
TG-3, a variety of groundnut suitable for cultivation under partial shade in coconut gardens
(Kerala Agricultural University, 1991) Sreekumar, S G; Gopinathan Nair, V; Saraswathy, P
Comparative evaluation of eight varieties of groundnut was conducted at the Regional Agricultural Research Station of NARP (SR), College of Agriculture, Vellayani for three years during 1984, 1986 and 1987 kharif seasons. The field experiment ( 8 x 3 RBD) was conducted at the interspaces of coconut garden under partial shade for identifying a suitable groundnut variety with high yield and shade tolerance. The pooled analysis of the data for three years revealed that the variety TG 3 was consistently superior in dry pod yield. Therefore, it was recommended for inclusion in the package of practices recommendations of the Kerala Agricultural University as a suitable variety for cultivation as intercrop in coconut garden under partially shaded conditions.
Variability in black gram under partially shaded conditions
(Kerala Agricultural University, 1992) Saji T Abraham; Sreekumar, S G; Saraswathy, P; Gopinathan Nair, V; Manikantan Nair, P
Variability in nineteen varieties of black gram was studied, under partially shaded conditions in coconut plantations. Analysis of variance for nineteen characters showed significant differences among the varieties for ten characters. Analysis of variance for chlorophyll pigments (a and b) at flowering and pod maturity revealed that there was no significant difference in the chlorophyll content among the varieties, but significant differences existed among the varieties for the chlorophyll pigments estimated at flowering and pod maturity periods. High genotypic coefficient of variation, moderate to high heritability and high genetic advance recorded for leaf area index at 50 per cent flowering and accumulation of dry matter (photosynthetic efficiency) at 50 per cent and 100 per cent flowering, number of days to blooming and number of days to the first pod harvest suggest the reliability of these characters during selection programmes for the improvement of this crop.