Informatics Publishing Limited

V. P. Santhi ¹, P. A. Priya ¹, B. Anita ¹, N. Selvaraj ¹

Affiliations
1 Horticultural Research Station (T.N.A.U.), Udhagamandalam, NILGIRI (T.N.), IN

Abstract

Investigations were carried out on yield and quality of sixteen varieties and six hybrids of carrot under two seasons in Nilgiri conditions during the year 2012-2013. The varieties were evaluated for per se performance, genotypic co-efficient of variances, heritability and genetic advance. Analysis of variance revealed the existence of significant differences among the varieties studied for all the characters. Based on the per se performance and variance, the variety Tokita Kuroda improved was found to be the best with respect to growth, yield and quality attributes followed by Century Super Kuroda. In varieties high estimate of genotypic co-efficient of variation was observed for ischolar_main splitting percentage, total chlorophyll, ischolar_main carotene, leaf carotene and ischolar_main forking percentage which indicates the potential possibility on improvement of these traits by restoring simple selection programme during Kharif and summer. The characters viz., leaf carotene, ischolar_main carotene, total chlorophyll, number of leaves and ischolar_main weight exhibited higher values of heritability coupled with genetic advance as percent of mean revealed that they may possibly controlled by additive genes. Hence, direct selection may be adopted to improve the characters under consideration during Kharif and summer, respectively.

Keywords

Genetic Variability, Carrot Varieties.

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B. Anita ¹, G. Rajendran ²

Affiliations
1 Horticultural Research Station Vijaynagaram, Ooty 643 001, The Nilgiris, India, IN
2 Department of Neonatology, TNAU, Coimbatore, IN

Abstract

Investigations were carried out under glasshouse conditions to study the effect of different methods of application of Pseudomonas fluorescens Migula for the management of Meloidogyne graminicola Golden and Birchfield infecting rice. The plant growth promoting bacterium P. fluorescens was applied as seed treatment, soil application and a combination of both seed and soil application. Dual application of P. fluorescens both as seed treatment and soil application proved to be the most effective treatment with highest reduction of 60.18 per cent in nematode population in ischolar_main and soil, and enhanced growth of rice seedlings. Colonization of P. fluorescens was the highest in ischolar_mains (36.76 % 10⁸ cfu/g) receiving the bacterium through seed treatment and soil application.

Keywords

Meloidogyne graminicola, Pseudomonas fluorescens, Rice.

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V. P. Santhi ¹, P. Raja ¹, B. Anita ¹, N. Selvaraj ¹

Affiliations
1 Horticultural Research Station (TNAU), Ooty (T.N.), IN

Abstract

Ten accessions of traditional french beans - types were collected from different elevations and evaluated for yield and quality at Nanjanad Farm, HRS, Ooty. The 10 entries of bush beans were evaluated in a Randomized Block Design with 3 replications at Nanjanadu Farm, HRS, Ooty. Observations were taken on growth and yield characters from 2010 onwards. Observation on plant height, number of branches, number of compound leaves, days taken of flowering, number of pods, days taken for pod setting, pod length, pod diameter and pod weight per plant were recorded. As indicated in the pooled means of four years from 2010 to 2013, among the bush bean types, accession number FBB-7 (Aruvath avarai) has recorded highest pod yield of 712.73 g/plant and pod weight of 15. 80g/ pod. The highest genotypic coefficient of variation was observed for number of leaves, pod weight and yield. High heritability values were observed in plant height, number of branches, number of leaves, days for flowering and pod development, pod length, pod diameter, pod weight and yield. The expected genetic advance expressed as percentage of mean was relatively high for the characters viz., plant height, branch, number of leaves, days for flowering, days for pod development, pod length, pod diameter, pod weight and yield.

Keywords

Growth, Yield, Genotypic Co-Efficient of Variation, Heritability, Genetic Advance.

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