Abstract
A field experiment was carried out at the Horticulture Farm, Bangladesh Agricultural University, Mymensingh during the period from November 2011 to February 2012 to study the effect of seed tuber size on the yield and quality of seven accessions of potato. The experiment was laid out in the Randomized Complete Block Design (RCBD) with three replications. This piece of research consisted of two factors namely, size of seed tubers i.e. three different size of seed tuber i.e. small (10-20 g), medium (21-30 g) and large (31-40 g) and seven accessions of potato i.e. AC10064, AC10076, AC10097, AC10109, AC10123, AC10190 and one check variety Cardinal. The size of individual plot was 1.8 m × 1.2 m. Two adjacent unit plots and blocks were separated by 0.5 m and 0.5 m. A spacing of 60 cm × 30 cm was also used in terms of planting. Data on different yield contributing characters and yield were recorded. The tallest plants were produced by the large size of seed tuber accession AC10109 (120.25 cm) which also took minimum time (6.10 days) to germinate and possessed maximum stem diameter (0.95 cm) while small seed tuber of Cardinal required maximum days (10.23 days) along with shortest height (60.22 cm) as well as stem diameter (0.65 cm). The large size seed tuber of accession AC10109 gave maximum number of main stems/hill (6.4) and small size of seed tuber variety Cardinal gave minimum number of main stems/hill (2.96). The large size of seed tuber accession AC10109 produced maximum number of compound leaves/hill (64.80) and the small size of seed tuber Cardinal produced minimum number of compound leaves/hill (35.74). In terms of yield character large size of seed tuber of AC10109 accession exhibited highest results in tuber number 9.60 with the average diameter of tubers (5.86 cm) and yield was 10.42 t/ha. The accessions differed significantly with respect to all the plant characters studied.
 J. Bangladesh Agril. Univ. 17(2): 200–205, June 2019
Highlights
Potato (Solanum tuberosum L.) is regarded as a high potential food security crop in Bangladesh
Different parameters pertaining to yield and other yield contributing characters of potato as influenced by different size of seed tuber in relation to accession have been described below: Plant emergence: Days required for plant emergence was significantly influenced by the combined effect of size of seed tuber and accession
The days required for plant emergence was minimum in AC10109 (6.10 days) with large size of seed tuber and maximum (10.23 days) time required to the small size of seed tuber of Cardinal (Table 1)
Summary
Potato (Solanum tuberosum L.) is regarded as a high potential food security crop in Bangladesh. The size of cut seed piece is important which influences the growth and yield of potato (Siddiqe et al, 1987). Under Bangladesh condition total number of eyes in a cut seed piece influences the number of shoot per hill and the vegetative growth and foliage coverage, and the yield. Potato seed piece with spacing influences economically important characteristics, including total yield, marketable yield, tuber size distribution, and tuber quality (Love and Thompson, 1999). Considering the above situation, the present work has been undertaken in order to characterize the important potato varieties and size of tubers in relation to their morphological characteristics, growth habit, yield and quality, using morphological traits with a view to investigating the relationship among the accession and selecting suitable ones for commercial cultivation under Bangladesh conditions
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