Raising cultures of proliferating shoots of female and male plants of Carica papaya through shoot apices taken from mature plants was difficult because of high incidence of endogenous bacterial contamination. Whilst they were easily raised through culture of young inflorescences tips of female and male plants. There was no difference in the requirement of nutrients and growth regulators for pro...

The development of single clones of the seagrass Cymodocea nodosa was analysed using a growth model based on the formation of structures limited by diffusive aggregation. The model implemented the measured clonal growth rules (i.e. rhizome elongation and branching rates, branching angle, and spacer length between consecutive shoots) and shoot mortality rate for C. nodosa at Alfacs Bay (Spain). ...

Striking and pronounced growth responses to the gibberellins as plant regulators and hormones are well known and readily produced in suitable plants. It was our purpose to study the effects of such growth responses on the concentrations of plant lipids and on the concentrations of antioxidants that are synthesized in plants. Growth changes were induced in pea plants by the application of gibber...

BACKGROUND AND AIMS Stinging nettle (Urtica dioica) is a herbaceous, dioecious perennial that is widely distributed around the world, reproduces both sexually and asexually, and is characterized by rapid growth. This work was aimed at evaluating the effects of plant maturity, shoot reproduction and sex on the growth of leaves and shoots. METHODS Growth rates of apical shoots, together with fo...

this study is attempted to compare the number of rings and circular scales that are formed during various ages on liza saliens. sampling was carried out monthly during 2012-2013 using beach sine fishing nets. 102 specimens of different sizes were collected and transferred to the laboratory in boxes containing ice. the age of fish was determined by the number of annual rings as well as, the numb...

Tissue culture is considered as an alternative tool for garlic breeding as traditional breeding is not possible due to its sterility. A study was carried out to develop a protocol of regeneration in Bangladesh local garlic. Shoot and root meristems of garlic cv. Bangladesh local were cultured on Murashige and Skoog (MS) medium containing various growth regulator combinations. Regeneration from ...

The interaction between sodium and calcium, magnesium and calcium and the combined effect of sodium, magnesium and calcium was observed on the growth and ion uptake of Hippophae rhamnoides L. The results demonstrated that an addition of sodium with calcium, (set a, Na 2.5 + Ca 5 mM) showed prominent increase in fresh weight of roots and shoots. The dry weight (average) of roots decreased an...

Aboveand below-ground growth, biomass, phenology and reproductive effort in the seagrass Thalassia testudinum were monitored monthly for 2 yr in the Lower Laguna Madre, Texas. Annual whole plant production (953 i 136 g DW (dry weight) m-2 yr-l) was calculated from monthly measurements of leaf and rhizome production made using marking techniques. Leaf growth exhblted a seasonal pattern; monthly ...

Observed growth, as given, for instance, by the length of successive annual shoots along the main axis of a plant, is mainly the result of two components: an ontogenetic component and an environmental component. An open question is whether the ontogenetic component along an axis at the growth unit or annual shoot scale takes the form of a trend or of a succession of phases. Various methods of a...