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Genetic Divergence in Potato (solanum Tuberosum L.)

M. A. SATTAR
Olericulture Division, HRC, Bangladesh Agricultural Research Institute (BARI), Gazipur 1701

M.Z. UDDIN
Olericulture Division, HRC, Bangladesh Agricultural Research Institute (BARI), Gazipur 1701

M.R. ISLAM
Olericulture Division, HRC, Bangladesh Agricultural Research Institute (BARI), Gazipur 1701

M.K.R. BHUIYAN
Citrus Research Station, BARI, Jaintapur, Syihet Bangladesh

M. S. RAHMAN
Citrus Research Station, BARI, Jaintapur, Syihet Bangladesh

Abstract/ Executive Summary:

Twenty eight genotypes of potato representing different sources collected from TCRC, BARI, Gazipur were tested for genetic divergence utilizing multivariate analysis. The genotypes were grouped into five clusters. No relationship was found between genetic divergence and geographic distribution. Number of tubers per plant and yield contributed maximum, while average weight of a tuber and weight of tubers per plant contributed high towards total divergence which offered due attention to these characters while selecting for increased tuber yield. The inter-cluster distance (D² ) was maximum (36.29) between III and IV. The highest and the lowest intracluster distances (D² ) were 9.64 and 2.48 in cluster III and II, respectively.

Keywords: Potato, Selection, Genetic divergence, Cluster analysis, Tuber yield

Location: Tuber Crops Research Centre (TCRC) of BARI, Gazipur

Start Date: 00-00-2004

End Date: 00-00-2005

Program Area: Variety and Species

Commodity: Potato

Objectives:

To find out the above mentioned qualities in a group of potato genotypes collected at the TCRC from different sources.

Methodology:

The investigation was carried out at the Tuber Crops Research Centre (TCRC) of BARI, Gazipur during 2004-2005. Twenty eight genotypes were used in the study of which 24 were of CIP origin and the rest four were commercial varieties of Bangladesh originated in the Netherlands. The experiment was laid out in a randomized complete block design (RCBD) with three replications. The seed tubers were sown on 28 November 2004 in 3m x 3m plots at 60 x 25 cm spacing. Fertilizers and other cultivation practices were applied as per recommendation of the TCRC. Data were recorded from 10 plants, randomly selected from the plot of each replication on plant vigour, plant height, compound leaves/plant, days to maturity, number of tubers/plant, average weight of a tuber, dry matter content, and yield/plant. D² statistic was used for estimating genetic divergence. Both individual and pooled analyses were performed. The data were subjected to multivariate analysis (Rao, 1952). Group constellation of clusters was done as outlined by Singh and Chaudhary (1985).

Source of Information: Bangladesh J. Agril. Res. 36(1) : 165-172, March 2011, ISSN 0258-7122

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

No relationship was found between genetic divergence and geographic distribution. Number of tubers per plant and yield contributed maximum, while average weight of a tuber and weight of tubers per plant contributed high towards total divergence which offered due attention to these characters while selecting for increased tuber yield. The inter-cluster distance (D² ) was maximum (36.29) between III and IV. The highest and the lowest intracluster distances (D² ) were 9.64 and 2.48 in cluster III and II, respectively.

Knowledge Management: Journal