June 2013
The impact of drought stress on photosynthetic quantum yield in Haloxylon aphyllum and Haloxylon persicum
The impact of periodic drought stress on photosynthesis changes was examined inHaloxylon aphyllum and Haloxylon persicum. Parameters F0, Fv/Fm, the chlorophyll content and chlorophyll a/b ratio were measured. Drought stress factor was consideredas lack of irrigation of potted-seedlings of two...
June 2013
Influence of Acacia senegal varieties on quality of gum arabic in Baringo District, Kenya
A study was done to determine the influence of Acacia senegal variety senegal and var.kerensis on quality of gum arabic in Solit, Kapkun, Kimorok and Maoi, Marigat division, Baringo District. Soil and gum arabic samples were collected, dried and analysed to establish their chemical characteristics. Gum nitrogen from A. senegal variety senegal in Kapkun and Solit was...
June 2013
Conservation status of trees in Tehsil Takht-e-Nasratti, Karak Pakistan
The present study documents the conservation status of 21 trees belonging to 14 families on small scale in Tehsil Takht-e-Nasrati, Karak through field surveys, frequently conducted in spring, summer and winter 2009-2010. Among these nine species were found to be rare, vulnerable (six species), infrequent (3 species), endangered (one specie) and dominant (two species). The conservation status of plants is determined...
June 2013
Amelioration of aluminum toxicity on OM4900 rice seedlings by sodium silicate
Silicon has versatile functions in plant biology, especially in plant defense and tolerance to both biotic and abiotic stressors. In this study, it was investigated if silicon could reduce the toxic effect of aluminum on rice. Aluminum was applied to OM4900 rice seedlings, and then their growth and sugar metabolism were determined. At doses of aluminum chloride of 100 and 200 µM, plant height was significantly...
June 2013
Allometric prediction models of growth variables of Daniella oliveri in the Nigerian Guinea Savanna
Trees show considerable variation and flexibility in their size of crowns, height, stem diameters, crown height and crown length. Stem diameter at breast height is an important tree characteristics and an accurate prediction of tree growth dimensions. Relationships between stem diameter and crown length with other variables of Daniella oliveri was studied. The result reveal positive correlations between...
June 2013
Genetic analysis of some yield attributes in Indian mustard (Brassica juncea L.)
The present investigation on Brassica juncea L. genotypes is an attempt to study variations and to generate variability through hybridization and also to obtain genetic information on some yield attributes for selection in segregating generations. Eight promising genotypes were selected and crossed in all possible combinations under complete diallel system. Data was recorded for seed yield and some...
June 2013
Factors influencing high callusing proliferation in cotton (Gossypium hirsutum L.)
In vitro regeneration of cotton (Gossypium spp.) has been a subject of intense research for the last two decades because of the commercial value of the crop. A study was conducted to assess the callusing potential of two local cotton genotype varieties viz., MCU-5 and SVPR-2 and two exotic genotypes, Coker 310 and 312. High significant difference was observed between media composition, genotype and explant...
June 2013
Effect of enzymatic treatment on carrot cell wall for increased juice yield and effect on physicochemical parameters
Combination of crude pectolytic and cellulolytic enzymes (both prepared from Aspergillus foetidus) was used as pretreatment for extraction of carrot juice since pectinases and cellulases contribute to the breakdown of pectin and cellulose, respectively, hence enhance the juice yield and clarity. Juice yield was increased by 11.38% due to enzyme action. Juice samples along with control were stored at room (30...
June 2013
In vitro plantlet regeneration and genetic transformation of sponge gourd (Luffa cylindrica L.)
In vitro plantlet regeneration via organogenesis was observed in leaf and nodal explants cultured on Murashige and Skoog (MS) medium fortified with various concentrations ofthidiazuron (TDZ), benzylaminopurine (BAP) or kinetin (Kn) in sponge gourd (Luffa cylindrica L) accession number 1868). TDZ was superior to BAP or Kn in inducing more number of shoots in leaf and nodal explants....
June 2013
In vitro propagation of Anchote (Coccinia abyssinica) (Lam.) Cogn.]
Coccinia abyssinica (Lam.) Cogn.] (Cucurbitaceae) is a tuberous neutraceutical plant locally known as Anchote (Oromo language). A micropropagation protocol was developed for C. abyssinica. Seeds were planted ex vitro in a pot that contained different soil mix ratios, and two weeks old seedlings were used as a source of explants. Shoot tip and nodal explants were sterilized...
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