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Pollen morphology of Pinus uliginosa Neum. and Pinus uncinata Ramond ex DC in an experimental culture

100%

Klimko M., Bykowska J.

Steciana

2015

tom 19

nr 3

Pollen grains of Pinus uliginosa and P. uncinata were examined by light and scanning electron microscopy. The pollen grains were bisaccate and monosulcate. The corpus-saccus attachment was distinct. The pollen corpus exine sculpture was verrucate-rugulate and deeply sculptured. The surface of the tectum was with or without small grana and it was perforate. The saccus sexine ornamentation was reticulate and irregularly perforate. The tectum surface characters in the proximal and distal view of the corpus and saccus were less variable and they did not provide good criteria to identify the species under study. Among the P. uncinata from the Forest Arboretum there were differences observed in the size, shape and height of elevation and sculpture on the corpus between pollen grains of the same specimen. This study of the pollen grain morphology of the corpus and saccus provided some important new data.

Length and weight relationship and growth performance of Meretrix casta under experimental culture condition in three different estuarine environment

84%

Srilatha G., Manikandarajan T., Ramamoorthy K., Sundaravarman K., Sankar G., Anbarasu R.

International Letters of Natural Sciences

2015

tom 47

The Meretrix casta is an edible clam for human beings and it is widely distributed around the aquatic ecosystem. The clam has relatively thick shells that can attain a length of three inches. The knowledge of the biology, culture and biochemical composition of any edible organism is extremely important. Though the size, shape and colour of clam are different their nutritive value is very good. A maximum average length of 27.15mm was observed in the M.casta studied during 2011 and a maximum average length of 26.51mm was observed during 2012. The average lengths of M.casta in all the three different estuaries studied were as follows: 27.15 > 25.82 > 25.04 mm in 2011 and 26.51 > 25.88 > 25.17mm in 2012. A maximum average weight of 7.824 and 7.155g was observed during 2011 and in 2012; a maximum weight of 7.528g and minimum of 6.941g was recorded uniformly in all the three different estuaries. However, in 2011and 2012 a maximum and minimum of average length of 26.86, 25.10 mm, and average weight of 7.67 and 7.05g respectively were noticed in both Vellar and Uppanar estuaries of M.casta. the present investigation, it is clearly observed that M.casta can grow a weight of 0.13g/day and length of 0.122mm/day among the three different estuaries studied in the Cuddalore district which is located in Bay of Bengal.

Isoenzymatic variability in progeny of Pinus mugo Turra x Pinus sylvestris L. hybrids from Bor na Czerwonem, in experimental culture

84%

Bobowicz M. A., Danielewicz W., Pieczynska B., Wojnicka-Poltorak A., Prus-Glowacki W.

Acta Societatis Botanicorum Poloniae

2000

tom 69

nr 2

Ograniczanie wyników

1 Acta Societatis Botanicorum Poloniae

1 International Letters of Natural Sciences

1 Steciana

1 Anbarasu R.

1 Bobowicz M. A.

1 Bykowska J.

1 Danielewicz W.

1 Klimko M.

1 Manikandarajan T.

1 Pieczynska B.

1 Prus-Glowacki W.

1 Ramamoorthy K.

1 Sankar G.

1 Srilatha G.

1 Sundaravarman K.

1 Wojnicka-Poltorak A.

2 2015

1 2000

Wyniki wyszukiwania

Pollen morphology of Pinus uliginosa Neum. and Pinus uncinata Ramond ex DC in an experimental culture

Length and weight relationship and growth performance of Meretrix casta under experimental culture condition in three different estuarine environment

Isoenzymatic variability in progeny of Pinus mugo Turra x Pinus sylvestris L. hybrids from Bor na Czerwonem, in experimental culture