Vascular plant

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  • Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Arbuscular mycorrhizal colonization of vascular plants from the Yungas forests, Argentina...

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  • Chapter 36 - Resource acquisition and transport in vascular plants. This chapter describe how proton pumps function in transport of materials across membranes; define the following terms: osmosis, water potential, flaccid, turgor pressure, turgid; explain how aquaporins affect the rate of water transport across membranes; describe three routes available for short-distance transport in plants;...

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  • The vascular flora of the Research Forest in Yen Tu, Quang Ninh was assessed between 2005 and 2006. In the area under review, 721 species belonging to 425 genera and 154 families were identified. Among these species, these are 9 Lycopodiophyta, 34 Polypodiophyta, 8 Gymnospermae and 670 Angiospermae species (577 Dicotyledonae, 93 Monocotyledonae). The richest 3 families are Euphorbiaceae with 52 (7.2%) species, Asteraceae with 30 (4.2%) species and Moraceae with 30 (4.2%) species. The richest genus is Ficus L., (22 species) followed by Syzygium Gaertn., (8 species) and Dioscorea L.

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  • This short book is about conserving insects, the most diverse and abundant animals that share our world. In particular, it is about the common focus of conserving individual species of insects. This so-called ‘fine filter’ (or ‘fine grain’) level of conservation parallels much conservation effort for better-understood groups of animals such as mammals and birds, for which species-focused conservation exercises are commonplace.

    pdf274p coeus75 29-01-2013 37 6   Download

  • The World Agroforestry Centre has classified rubber-based systems in Indonesia according to their intensity of management, as illustrated by the photographs on the opposite page. Intensively-managed monoculture rubber plantations contain less than 1% non-rubber trees, none of which have been planted deliberately. Simple mixed rubber agroforests contain up to one-third non-rubber trees, which have been deliberately planted or retained, between five and 20 non-rubber species greater than 2 m in height and 5–20 non-rubber trees as tall as, or taller than, the rubber trees.

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  • Phenolic compounds represent a large group of molecules with a variety of functions in plant growth, development, and defense. Phenolic compounds include signaling molecules, pigments and flavors that can attract or repel, as well as compounds that can protect the plant against insects, fungi, bacteria, and viruses. Most phenolic compounds are present as esters or glycosides rather than as free compounds. Tannins and lignin are phenolic polymers.

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  • SCN, like all plant-parasitic nematodes, is a microscopic roundworm – a very simple animal, related to the animal- parasitic roundworms that infect livestock and pets. The juvenile nematode [top right] is the infective stage of SCN – the stage that actually enters the soybean root. It hatches from an egg [right]. The juveniles penetrate soybean roots and cause the for- mation of specialized feeding cells in the vascular system (veins) of the roots.

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