The natural occurrence of 22-hydroxylated steroids in cultured Catharanthus roseus cells and in Arabidopsis seedlings was investigated. Using full-scan gas chromatography-mass spectrometry analysis, (22S)-22-hydroxycampesterol (22-OHCR), (22S,24R)-22-hydroxyergost-4-en-3-one (22-OH-4-en-3-one), (22S,24R)-22-hydroxy-5alpha-ergostan-3-one (22-OH-3-one), 6-deoxocathasterone (6-deoxoCT), 3-epi-6-de...

Field experiments were conducted on-farm in the forest zone of Ghana to determine the effects of stubble mulch (in-situ residues from Mucuna pruriens var utilis or natural grass fallow) and method of land preparation on the yield of dry season tomato (Lycopersicon esculentum). Land preparation methods studied were slash burn and ridge; ridge and mulching with the existing residue; and zero till...

In the present study, the effect of seaweed liquid fertilizer (SLF) of Ulva fasciata, Nizimuddinia zunardini and Gracilaria corticata without chemical fertilizer on seed germination, growth parameter, pigment and carbohydrate content of Wheat var. (Chamran) was investigated. The seeds soaked with aqueous extract of seaweeds performed better when compared to the water soaked controls. The 10% co...

We examine the height growth, diameter growth and below-ground allocation responses of mountain beech (Nothofagus solandri var. cliffortioides) seedlings to the experimental removal of root competition through root trenching and the addition of fertiliser within relatively intact-canopied mountain beech forest in the Craigieburn Range, Canterbury. Trenching and trenching combined with fertilise...

WHIGHAII, D., and R. SIIIPSON. (Biol. Dept., Rider Coll., Lawrenceville, Ne:v Jersey 08648). Growth, mortality, and biomass partitioning in freshwater t idal wetlmd populations of wild rice (Zizania aquatica Tar. aquatica). Bull. Torrey Bot. Club 104: 347-351. 1977.-Wild rice is a common annual in Delaware River tidal ~retlands. Net production was as high as 20.9 g m" day-I and varied seasonall...

Hydrogen peroxide is most stable molecule among reactive oxygen species, which play a vital role in growth and development of plant as signaling molecule at low concentration in response to various abiotic and biotic stresses. Exogenous application of H2O2 is known to induce chilling tolerance in plants. Brassinosteroids are plant steroid hormones known for their anti-stress properties. In this...

phytophthora root and crown rot of soybean is known as a destructive disease of soy-bean both through out the world and in iran. physiologic races of phytophthora soja were determined in this research and also a fast, accurate and simple method for inoculation of soybean to test race specific resistance. during the years　2001-4, infected soybean plants at different growth stages were collected ...

The extensive use of heavy metals and nanoparticles (NPs) has led to their release into the environment that might have negative impacts on both organisms and the environment. In this study, the molecular responses of wheat seedlings to silver nitrate and silver nanoparticles (AgNPs) were assessed by transcript accumulation analysis of genes coding for products potentially involved in heavy met...

Coconut seedlings were raised in poly-bags in two contrasting soils and common salt was applied at the rate of 0, 2 , 4 , 6, 8, 10 and 12 g per seedling. The study was carried out from June 1982 to July 1983 and December 1982 to November 1983. The seedlings were quite tolerant of salination. Dry matter accumulated in plant parts were in the order, leaves>roots>stem. Uptake of applied nutrients ...