scholarly journals Comparative review of phenological events observed by academician P.S. Pallas in Transbaikalia in the second half of the 18th century

2022 ◽  
Vol 962 (1) ◽  
pp. 012052
Author(s):  
O V Korsun

Abstract This article analyses the phenological data about the flowering of some plant species obtained by P.S. Pallas in Transbaikalia during his academic expedition in 1772. For seven plant species, a noticeable shift in modern flowering phases to earlier dates is shown.

Author(s):  
A. O. Okpe ◽  
F. A. Nkaa

Plant transformation is now an important biotechnological tool in plant biology and a practical tool for transgenic plant development. There are many verified methods for stable introduction of novel genes into the nuclear genomes of diverse plant species. As a result, gene transfer and regeneration of transgenic plants are no longer the factors limiting the development and application of practical transformation systems for many plant species. However, the desire for higher transformation efficiency has stimulated work on not only improving various existing methods but also in inventing novel methods. Different methods of transferring the gene into plant cells have been developed and continuous efforts have been made to increase its efficiency. Both direct and indirect methods of gene transfer have their own merits and demerits. Efforts have been made continuously to eliminate drawbacks and to develop an easy and eco-friendly method to transfer foreign genes. Many methods of genetic transformation have been proposed and tried in the laboratories, but most of them result to transient expressions. However, transformation work based on particle bombardment with DNA coated micro projectiles and Agrobacterium mediated transformation have proved to be promising in producing stable transgenic plants from a range of plant species.


2020 ◽  
Vol 8 (2) ◽  
pp. 223-230
Author(s):  
Sujan Chaudhary ◽  
Gyanu Thapa Magar ◽  
Shiv Nandan Sah ◽  
Sanju Parajuli

Ethnobotany is the study of ethnic plants of particular people living in particular place. It accommodates list, details and description of all those studied plants regarding with their various uses. Tharu people belong to one of the indigenous communities especially in Terai region of Nepal. Tharu people have been using these plant resources since 18th century. This study aims to identify ethnic plants of Tharu community of eastern Nepal and their uses in their daily lives.  Enumeration of useful plants from Tharu ethnic community was conducted in four villages of Ramdhuni municipality of Sunsari district. Participatory Rural Appraisal (PRA) and household sampling technique were used for data collection. Plant specimens were collected and information regarding it was obtained from local Dhamis, Jhankris, farmers and old age people. This study reported thirty-seven useful plant species under 25 families. In total 37 species, 25 were recorded as medicinal plant, used to treat pneumonia, menstrual disorder, stones, piles, skin disease etc. Other plant species were used for food, fodder, timber, fiber and ceremonial/ religious activities. Most plant species (78.3%) were having multiple use value, and kept under more than one use category and few species (21.7%) with single use category. Trees (27.02%) and herbs (27.02%), both were dominant over grass, shrubs, climbers and creepers. This study has revealed that many plants species are being used by Tharu community of Eastern Nepal as their ethnic plants for medicine, food, fodder, ornament, material etc which needs to be more explored. Int. J. Appl. Sci. Biotechnol. Vol 8(2): 223-230


2007 ◽  
Vol 55 (5) ◽  
pp. 275 ◽  
Author(s):  
Angela J. L. Pestell ◽  
Sophie Petit

The diet of a population of western pygmy possums, Cercartetus concinnus Gould (Marsupialia: Burramyidae), at Innes National Park, South Australia, was examined using faecal and fur pollen swab samples in relation to monthly plant phenological data. Eucalyptus pollen was the most abundant in both faeces and in fur swab samples, followed by Melaleuca pollen; plant exudates could not be examined by this study. Moth scales were found in 26% of the scat samples. Faecal samples comprised most plant species identified (15 of 17), but up to 25% of plant species recorded from fur pollen swabs were not recorded from faeces. The relatively high frequencies of plant species represented in fur pollen swabs indicates that this method is valuable for supplementing faecal analysis used to determine plant visitation by nectarivorous animals.


1989 ◽  
Vol 34 (9) ◽  
pp. 836-838
Author(s):  
Virginia Greendlinger
Keyword(s):  

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
N Moodley ◽  
V Maharaj
Keyword(s):  

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
J Táborský ◽  
M Kunt ◽  
P Kloucek ◽  
L Kokoska

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
V Roumy ◽  
AL Gutierrez-Choquevilca ◽  
JP Lopez Mesia ◽  
L Ruiz ◽  
J Ruiz ◽  
...  

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