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Morphological variation assessment in different accessions of Plectranthus forskohlii (Willd) Briq. from South India

100%

Lakshmanan G. M. A., Manikandan S.

International Letters of Natural Sciences

2015

tom 01

The genus Plectranthus belongs to the family Lamiaceae is found in wild and cultivated condition. In the present work, the cultivars of Plectranthus forskohlii have been collected from Tamil Nadu, Kerala and Karnataka at different places. The accessions collected from Karnataka showed high tuber size, length and volume when compared to accessions collected from Tamil Nadu and Kerala. The most significant observation was made in Karnataka and Tamil Nadu cultivar accessions which were grown in the same soil in field condition have much branched root tuber with significant fresh weight as compared with accessions from Kerala. The Kerala accessions were observed with less diffused root tuber with low fresh weight. On the basis of the present research, it was concluded that the phenotypic variations present in leaf, stem and root characters might be due to some genetic heritable variation which may exist in the accessions collected from different locality, and this require further study with respect to their genotypic nature of Plectranthus forskohlii.

Assessment of morphological damages of leaves of selected plant species due to vehicular air pollution, Kolkata, India

67%

Nandy A., Talapatra S. N., Bhattacharjee P., Chaudhuri P., Mukhopadhyay A.

International Letters of Natural Sciences

2014

tom 04

The present study deals to know morphological damages of leaves of four selected plant species near roadside due to vehicular air pollution in Kolkata, India. The selected plant species are Ficus bengalensis, Ficus religiosa, Alstonia scholaris and Neolamarckia cadamba as these are very common as avenue trees. The study area was selected as per Low vehicular load (LVL) as control area, moderate vehicular load (MVL) area, high vehicular load (HVL) area and heavy vehicular load (HeVL) These three sampling stations were selected on the basis of moderate, high and heavy traffic density and continuous vehicular movement as per visualization. The control area was considered as time dependent vehicular movement due to less traffic density. The morphological damages with special reference to length (L), breadth (B) and L/B ratio and visible injuries in leaves. The visible injuries such as pigmentation, chlorosis, necrosis and burning of leaves of four selected species is documented. There was an increasing and decreasing tends in all four plant species at all three vehicular emission exposed sites (MVL, HVL and HeVL) compared to control site (LVL). In all experimental sites such as MVL, HVL and HeVL, the extra growth and reduction pattern significantly (P < 0.001, 0.01 or 0.05) observed when compared to control site (LVL) for L, B and L/B ratio. The visible injuries (in %) of leaves were also observed in increasing trends. This study is a preliminary assessment of tolerant species that already have been used in greenbelt development to protect air pollutants as well as biological monitoring to know exact load of automobile air pollution but further researches are needed in relation to biochemical and genetic damage study. It was observed that out of four selected species Ficus bengalensis, Alstonia scholaris and Neolamarckia cadamba are more tolerant species and Ficus religiosa is a less tolerant species because of these may have fighting abilities by waxy coatings, accumulation and degradation abilities to vehicular air pollution at all exposed area when compared to control area.

Ocena fenologiczna i morfologiczna oraz plonowanie cebul odmian narcyzów uprawianych w cyklu jednorocznym i trzyletnim w warunkach przyrodniczych Olsztyna. Część I. Przebieg fenofaz narcyzów (Narcissus L.) i czas ich trwania

51%

Wazbinska J., Brych A., Ploszaj B.

Zeszyty Problemowe Postępów Nauk Rolniczych

2008

tom 525

Badania nad przebiegiem fenofaz odmian narcyzów przeprowadzono w latach 1998-2001 w Ogrodzie Zakladu Dydaktycznego Uniwersytetu Warmińsko-Mazurskiego w Olsztynie. Badaniami objęto 8 odmian narcyzów z różnych grup: ‘Carlton’, ‘Gigantic Star’ z grupy Narcyzy Wielkoprzykoronkowe; ‘Cheerfulness’, ‘Golden Ducat’, ‘Tahiti’, ‘Yellow Cheerfulness’ z grupy Narcyzy Pełne; ‘Geranium’, ‘Scarlet Gem’ z grupy - Mieszańce Tazetta. Odmiany te uprawiano w cyklu jednorocznym i trzyletnim. W okresie badań wykonano obserwacje fenofaz: rozpoczęcie wegetacji, początek kwitnienia, pełnia kwitnienia, koniec kwitnienia, zakończenie wegetacji, liczba dni wegetacji, liczba dni od rozpoczęcia wegetacji do początku kwitnienia oraz długość okresu kwitnienia. Fenofazy te notowane u badanych odmian narcyzów miały jednakowy przebieg zarówno w uprawie jednorocznej, jak i w uprawie trzyletniej i zależały od temperatury powietrza oraz opadów w poszczególnych latach badań. Początek wegetacji następował na przełomie lutego i marca. Najwcześniej w obu uprawach rozpoczęły kwitnienie odmiany: ’Carlton’, ‘Geranium’, ‘Gigantic Star’ i ‘Scarlet Gem’. Najdłuższym okresem kwitnienia w obu uprawach wyróżniły się odmiany ‘Carlton’ (8—19 dni) i ‘Gigantic Star’ (10-18 dni), a najkrótszym ‘Yellow Cheerfulness’ (9-13 dni) i ‘Cheerfulness’ (10-14 dni).

Ograniczanie wyników

2 International Letters of Natural Sciences

1 Zeszyty Problemowe Postępów Nauk Rolniczych

1 Bhattacharjee P.

1 Brych A.

1 Chaudhuri P.

1 Lakshmanan G. M. A.

1 Manikandan S.

1 Mukhopadhyay A.

1 Nandy A.

1 Ploszaj B.

1 Talapatra S. N.

1 Wazbinska J.

1 2015

1 2014

1 2008

Wyniki wyszukiwania

Morphological variation assessment in different accessions of Plectranthus forskohlii (Willd) Briq. from South India

Assessment of morphological damages of leaves of selected plant species due to vehicular air pollution, Kolkata, India

Ocena fenologiczna i morfologiczna oraz plonowanie cebul odmian narcyzów uprawianych w cyklu jednorocznym i trzyletnim w warunkach przyrodniczych Olsztyna. Część I. Przebieg fenofaz narcyzów (Narcissus L.) i czas ich trwania