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Potato plantlets responded in sugar-free media yield per plant was observed for days to 50%
although sugar-containing media (PMM1 and bolting, number of seeds per umbel and 1000-seed
PMM2) performed better as compared to that of weight. Days to 100% sprouting and number of
sugar-free (PAM1 and PAM2) media. The PMM1 flowers per umbel showed strong significant
produced snoot length averaging 6.25 cm with 8.08 positive genotypic correlation with seed yield,
nodes and weighing 0.24 g fresh weight of plantlet. whereas significant negative correlation was
On the other hand, PAM1 grown culture produced observed for bulb size. Days to 100% sprouting,
4.03 cm shoot length, 8 nodes and 0.06 g of fresh days to 50% bolting, number of stalks per plant,
weight. Shoot length and fresh weight of plantlets number of umbels per bulb, number of seeds per
were significantly higher in PMM1 and PMM2 umbel and 1000-seed weight was related with seed
based media. Whereas the number of nodes per yield through direct effects. Though bulb size
shoot was not significantly different on media with showed negative direct effect on seed yield but it
or without sugar (except the media PAM2). Sugar showed indirect positive effect via stalk length,
and vitamin-free media ( PAM2 ) performed stalks number per plant, umbel number per bulb
inferior in all the traits. and number of seeds per umbel.
461 SULTANA, M. (Plant Genetic Resources 636.08: AGRICULTURE:LIVESTOCK-
Center, Bangladesh Agricultural Research BREEDING
Institute, Gazipur); ISLAM, A.K.M.A.; RASUL,
M.G.; MIAN, M.A.K. (Dept. of Genetics and
Plant Breeding, Bangadandhu Sheikh Mujibur 462 AZIZ, M.A.; FEEROZ, M.M. (Dept. of
Rahman Agricultural University, Gazipur). Zoology, Jahangirnagar University, Savar, Dhaka)
Estimation of correlation and path coefficients of & SULTANA, S. (Dept. of Zoology, Satkhira
seed yield contributing traits in onion (Allium cepa Govt. College, Satkhira). Observations on the
L.). Bang. J. Life Sci. , 2007, 19 (2), 133-139. morphometric development and metamorphosis of
Ornate Microhylid, Microhyla ornata tadpole.
Nineteen onion genotypes from different origins Bang. J. Life Sci. , 2006, 18 (1), 47-52.
were studied in order to find out the genetic The study was conducted on the morphometric
variability, correlation and path coefficient for development and metamorphosis of the tadpole of
Ornate Microhylid, Microhyla ornata in Wildlife
yield contributing characters. Significant variations
were observed among the genotypes in regard to Rescue Centre of Jahangirnagar University
almost all characters except number of flowers per between April and November 2005. The
umbel, number of umbels per bulb and 1000-seed progressive metamorphosis transformed the free
weight. Minimum difference between GCV and swimming herbivorous aquatic tailed larva to
PCV and high heritability coupled with high terrestrial carnivorous tailless adult frog. The eggs
were found small, loosely bound with gelatinous
genetic advance was observed for bulb size. High
heritability with low genetic advance was observed substances that floated for some days and later
for days 100% sprouting, days to 50% bolting and submersed and attached with aquatic vegetation
seed yield per plant. Correlation coefficient was near the edge of the temporal breeding sites. The
estimated to see the association between yield and average body length of the first day tadpole was
nine other characters of onion. Significant positive measured as 1.5mm (range: 1.3-1.6mm; sd±0.09;
genotypic and phenotypic correlation with seed n=12) with 3.0mm (range: 2.3-4.0mm; sd±0.52;
n=12) laterally compressed tail. The buds of hind
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