The temporal pattern of control by phytochrome of the enzyme lipoxygenase (EC 1.13.1.13) in the m ustard seedling (Sinapis alba L.) is described. The biosynthetic system which produces lipoxygenase does not respond to phytochrome (Pfr) up to 33.25 h after sowing (25 °C ). By this time the control by Pfr comes suddenly and fully into play. At 48 h after sowing the system escapes from the control...

Kassahun Embaye. 2003. Ecological aspects and resource management of bamboo forests in Ethiopia. Doctoral dissertation. This thesis describes the extent and condition of the natural bamboo forests of Ethiopia and their actual and potential values for society and environment. It assesses in detail the growth and nutrient dynamics in a selected highland bamboo forest in Southwest Ethiopia (Masha)...

Unreasonably high irrigation levels and excessive nitrogen (N) supplementation are common occurrences in the North China Plain that affect winter wheat production. Therefore, a 6-yr-long stationary field experiment was conducted to investigate the effects of irrigation and N regimes on root development and their relationship with soil water and N use in different soil layers. Compared to the no...

Different responses of plant genotypes to the change of environmental conditions have been the most important and challenging issue for plant breeders and agronomists for the selection of superior genotypes. Cumin is one of the most important medicinal and aromatic plants in Iran that are strongly affected by varying environmental conditions. This study was aimed to investigate E×SD interaction...

Soil enzymes play a vital role in nutrient mineralization and their activity is an excellent sensor in predicting the capacity of nutrient supply to plants. Temporal changes in three soil enzymes activity (urease, alkaline phosphatase and dehydrogenase) in rainfed wheat were studies through field experiment conducted at the research farm of Pir Mehr Ali Shah Arid Agriculture University Rawalpin...

Effects of additional nitrate (20 mol m·3 NO;) on growth of barley (Hordeum vulgare L. cv. Triumph), oat (Avena sativa L. cv. Amuri), rye (Secale cereale L. cv. Rapaki), triticale (x Triticosecale Wittm. cv. Aranui) and wheat (Triticum aestivum L. cv. Otane) prior to emergence from a sowing depth of 70 mm were examined under controlled environment. conditions. For all five cereals, additional N...

Grain amaranth is a highly nutritious pseudo-cereal with good adaptability to range of environmental conditions and potential be further cultivated in many areas the world. Although crop has adaptability, soil type can influence establishment production; thus, objective this study was evaluate how cultivar, sowing depth, affect emergence early growth grain amaranth. A pot experiment carried out...