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Identification of Potential Exotic Varieties with Yield and Yied Contributing Characters of Potato by Multivariate Analysis

Zobaer Akond
SO
ASICT Division,BARI,Gazipur-1701

Nur Mohammad
SO
ASICT Division,BARI,Gazipur-1701

Kazi Saidur Rahaman
SO
ASICT Division,BARI,Gazipur-1701

Sajeda Akhter
PSO
TCRC Division,BARI,Gazipur-1701

Abstract/ Executive Summary:

This study was carried out to identify the potential exotic varieties with the important yield and yield contributing characters of potato which are used in routine selection of varietal development or selection purpose and which also account for the major variation in the yield of potato. Potato with 20 varieties were analyzed using Karl Pearson’s (1901) principal component analysis and Hotelling’s (1993) computing method for the 10 characters. Three principal components were chosen for contributing major variation in this potato experiment. To describe twenty varieties,these first three PCA ordinations on axes I, II and III accounted for 78.8% of the total variation among the characters. The main characters that differentiate among exotic potato varieties were tuber weight (TW) 28mm-55mm, percentage of emergence(PE), tuber number (TN) 28mm-55mm, stem number(SN) and plant yield (PY). Entries 6(Diamant), 18(Daisy), 20(Cardinal), 13(Flova) 17(Pamela), & 5(Destiny) performed better with respect to these characters based on positive loadings in first three principal components contributing 78.8 % variation.

Keywords: Exotic varieties, Yield and yield contributing characters, Potato

Location: TCRC Division,BARI

Start Date: 00-00-2011

End Date:

Program Area: Variety and Species

Commodity: Potato

Objectives:

To identify characters those are important for the major variation and differences among the entries

Methodology:

The experiment was conducted in the field of TCRC(Tuber Crop Research Centre),Bangladesh Agricultural Research Institute (BARI), Gazipur, during the Rabi season of 2011. In this experiment 20 exotic varieties of potato were grown with 3 replications and the experiment was set in Randomized Complete Block Design (RCBD). Plot mean yield of 3 replications from these secondary data were obtained and 10 characters : plant yield (PY), percentage of emergence(PE),plant height(PH), stem number(SN), tuber number(TN)< 28mm, tuber number(TN) 28mm-55mm, tuber number(TN)>55mm, tuber weight(TW)<28mm,tuber weight (TW) 28mm-55mm, tuber weight (TW)>55mmwere studied. To analyze the difference among twenty exotic varieties with these ten characters, PCA was performed with the help of Computer Program (Genstat-5) and the program produced Eigen values of the principal component axes. Based on the first three axes, a three dimensional ordination of those exotic varieties was drawn in order to determine the ability of PCA to reflect interrelationships among entries.

Source of Information: Annual report 2012, BARI

Article Link (Online Journal):

Funding Source:

1.	Budget: 10,000/-

Total Budget (Tk.) : 10,000/-

Achievement/Findings:

Entries 6(Diamant), 18(Daisy), 20(Cardinal), 13(Flova) 17(Pamela), & 5(Destiny) performed better with respect to these characters based on positive loadings in first three principal components contributing 78.8 % variation.

Knowledge Management: Report/Proceedings