2. Institutional Publications

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Author: search.filters.author.Manju, PHas files: Yes

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    Estimation of inbreeding depression through embryo and kernel analysis in coconut types
    (Kerala Agricultural University, 1994) Manju, P; Gopimony, R
    The study was undertaken to assess the breeding value of the three Komadan generations, the WCT and the NCD by selfing them and studying the extent of inbreeding depression. The three Komadan generations behaved as a distinct group against WCT and NCD types for weight of embryo and kernel. The significant reduction in embryo and kernel weight in the selfed nuts of NCD and WCT indicated a high degree of inbreeding depression. The results indicate the high degree of homozygosity achieved by the Komadan types through natural self pollination as against heterozygosity in WCT and NCD.
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    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.
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    Kanjangad - a sweet potato variety for uplands
    (Kerala Agricultural University, 1995) Manju, P; Sunny K Oommen
    In an investigation to identify superior clones of sweet potato (Ipomoea batatas [L.\ Lam) suitable for uplands, 36 clones were evaluated in a preliminary yield trials and 14 superior ones were clonally selected and subjected to comparative yield trial for three years. The types SPC-13, SPC-18, SPC-20 and Kanjangad gave higher tuber yield in comparison to others. SPC-13 had the highest total acceptability score followed by Kanjangad which show their superior cooking quality. The results of the farm trial conducted at 12 locations revealed the superiority of SPC-18 and Kanjangad with respect to tuber yield and low weevil incidence. However, the farmers' preference and consumer acceptability were more towards Kanjangad due to its attractive spindle shape and purple colour. Kanjangad was hence released as variety for cultivation in the uplands of Kerala.
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    Malika, an improved variety of vegetable cowpea
    (Kerala Agricultural University, 1995) Manju, P; Sunny K Oommen
    In an investigation to identify a high yielding vegetable cowpea type with good quality green pods, 13 genotypes were collected from different agroclimatic regions of Kerala and 20 single plant selections made. Based on yield and yield attributes, nine promising selections were subjected to comparative yield trial for three seasons. Even though Selection 16 and 7 ranked first and second respectively for yield of vegetable pods in the comparative yield trials, pod length and number of seeds per potl were maximum for Selection 7 which is a single plant selection from Trivandrum Local. The results of the farm trials conducted at 10 locations in Trivamlrum district revealed the superiority of Selection 7 over the others with respect to the yield of vegetable pods. Hence, Selection 7 was released as "Malika" having a duration of 100 days. It is suitable for cultivation in the homestead during kharif and in the rice fallow during summer in Trivandrum district of Kerala.
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    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.
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    Combining ability en grain cowpea
    (Kerala Agricultural University, 1996) Jayarani, L S; Manju, P
    Combining ability analysis involving two lines, six testers and 12 hybrids revealed the importance of specific combining ability for all the characters except for length of pod and days to flowering. The varieties Chharodi-1, Culture-9, V 26 and GC-82-7 were the best general combiners and the cross combinations Chharodi-1 x V 26, Chharodi-1 x Kanakamani and Culture-9 x V 322 were the best specific combinations for yield and yield attributes under partially shaded upland conditions.
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    Variability in f4 generation of irradiated interspecific hybrids in okra (Abelmoschus esculentus (L.J moench)
    (Kerala Agricultural University, 2000) Anu Mary C Philip; Manju, P; Rajagopalan, B
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    Variability in f4 generation of irradiated interspecific hybrids in okra (Abelmoschus esculentus (L.J Moench)
    (Kerala Agricultural University, 2000) Anu Mary C Philip; Manju, P; Rajagopalan, B
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    Sneha, an improved variety of groundnut for uplands
    (Kerala Agricultural University, 2000) Suma Bai, D I; Manju, P; Sverup John; Wilson, D; Gopimony, R; Vijayagopal, P D
    Initial evaluation trials (lETs) were conducted with 18 superior types and 18 extra early segregants from the Fs progenies during 1993. From the lETs, seven high yielding types and nine high yielding, extra early progeny bulks were selected and subjected to CYTs during kharif 1994 and 1995 at the College of Agriculture, Vellayani, Thiruvananthapuram along with check varieties. Two promising types, VGE-551 and 1SKO-8805 with high yield and two cultures, Culture 15 and Culture 18 with high yield and early maturity were advanced to farm trials along with TMV 2 and local check at nine locations in Thiruvananthapuram district during kharif 1996. Culture 15 with high yield and early maturity was recommended for release as Sneha suitable for cultivation in the uplands of Thiruvananthapuram district.
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    Genetic analysis in f2 generation of irradiated interspecific hybrids in okra (abelmoschus spp.)
    (Kerala Agricultural University, Vellanikara, 2001) Sophia, John; Manju, P; Rajamony, L