Abstract:
Twenty True Potato Seed (IPS) progenies supplied from Tuber Crops
Research Centre (TCRC) of Bangladesh Agricultural Research Institute
(BAR!) were evaluated during 2000-2001 Rr their yield potential in seedling
tuber generation (F
1 C0
) at Sher-e-Bangla Agricultural University (SAl)),
Dhaka. Among them only nine progenies were selected as promising and
evaluated iii their first clonal generation ([-',C l
) along with a check variety,
Diamant for keeping quality under natural storage condition. The selected
progenies were further evaluated in field during 200 1-2002 at same location.
There existed si"nilicant variation among the progenies in seedling tuber
generation for important plant growth parameters. In first clonal generation,
the progenies showed significant variation for all the plant growth
parameters studied except number and weight of tubers hill'. Tuberlets yield
h&') was found to he highly correlated with foliage coverage, plant height,
number of tuberlets plani', number of tuherlets m 2 and luherlek yield (kg
111-2
) and direct cCkct was observed with these characters towards increasing
tuberlets yield. Regarding post-harvest behaviour under natural storage,
small and medium sized tubers performed significantly better storage life
compared to large tubers. All the progenies showed superior storage life
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(weight loss, rottage loss, days to sprouting and shrivelling etc.) than the
check variety, Diamant. Based on both productivity and post-harvest
behaviour under natural storage condition, the performances of three
progenies namely; HPS-36419, HPS-9/67 and HPS-364/67 were found
satisfactory.
