Shoot

About: Shoot is a research topic. Over the lifetime, 32188 publications have been published within this topic receiving 693348 citations.

Analysis of Nitrogen Accumulation and Use in Bread and Durum Wheat

Abstract: Differences among genotypes for shoot N accumulation before and after anthesis became obvious at the highest soil N level. At this level, some genotypes either stopped accumulating or showed a net loss of shoot N between anthesis and maturity, which appeared to be associated with superior preanthesis N accumulation capacity and reduced grain N yield of such genotypes. Uptake efficiency (total shoot N/soil N supply) became slightly more important than utilization efficiency (grain yield/total shoot N) in determining N use efficiency (grain yield/soil N supply) with increasing soil N supply

Organ- and Season-Dependent Variation in the Essential Oil Composition of Salvia officinalis L. Cultivated at Two Different Sites

Abstract: More than 50 compounds were identified in essential oils from stems and leaves of Salvia officinalis L. plants harvested in July, in Arouca, in northern Portugal. About 40 of those compounds were also present in flower essential oils, collected from the same plants. α-Thujone was the major compound, representing about 55, 30, and 18% of the essential oils from stems, leaves, and flowers, respectively. Significant percentage variations in the main compound classes of the essential oils from shoots sampled over the year were recorded at two different sites in northern Portugal. From December to April, oxygenated monoterpenes (MO) decreased from ∼67−72% to values of 42−43% of the essential oils. During the same time interval, the percentage of monoterpene hydrocarbons (MH) rose from 8−11% to 17−22%. At both sites, sesquiterpene hydrocarbons (SH) rose from ∼7% in February to 19−22% in April, decreasing thereafter to ∼9% in July. Oxygenated sesquiterpenes (SO) increased from a minimum of ∼5% in July to a maxim...

Plant regeneration from meristems of grain legumes: soybean, cowpea, peanut, chickpea, and bean

Abstract: The regeneration potential of shoot apical meristems of soybean, cowpea, peanut, chickpea, and bean was studied on agar-solidified MS nutrient medium supplemented with various concentrations of ben...

Branching in Pea (Action of Genes Rms3 and Rms4).

Abstract: The nonallelic ramosus mutations rms3-2 and rms4 of pea (Pisum sativum L.) cause extensive release of vegetative axillary buds and lateral growth in comparison with wild-type (cv Torsdag) plants, in which axillary buds are not normally released under the conditions utilized. Grafting studies showed that the expression of the rms4 mutation in the shoot is independent of the genotype of the root-stock. In contrast, the length of the branches at certain nodes of rms3-2 plants was reduced by grafting to wild-type stocks, indicating that the wild-type Rms3 gene may control the level of a mobile substance produced in the root. This substance also appears to be produced in the shoot because Rms3 shoots did not branch when grafted to mutant rms3-2 rootstocks. However, the end product of the Rms3 gene appears to differ from that of the Rms2 gene (C.A. Beveridge, J.J. Ross, and I.C. Murfet [1994] Plant Physiol 104: 953-959) because reciprocal grafts between rms3-2 and rms2 seedlings produced mature shoots with apical dominance similar to that of rms3-2 and rms2 shoots grafted to wild-type stocks. Indole-3-acetic acid levels were not reduced in apical or nodal portions of rms4 plants and were actually elevated (up to 2-fold) in rms3-2 plants. It is suggested that further studies with these branching mutants may enable significant progress in understanding the normal control of apical dominance and the related communication between the root and shoot.