Sterile insect technique — is a method of biological control, whereby millions of sterile insects are released. The released insects are normally male as it is the female that causes the damage, usually by laying eggs in the crop, or, in the case of mosquitoes, taking a… … Wikipedia
Plant sexuality — Close up of an Echinopsis spachiana flower, showing both carpels (only the styles and stigmas are visible) and stamens, making it a perfect flower. Plant sexuality covers the wide variety of sexual reproduction systems found across the plant… … Wikipedia
Male — This article is about the Male sex. For the city, see Malé. For other uses, see Male (disambiguation). The shield and spear of the Roman god Mars, which is also the alchemical symbol for iron, represents the male sex. Male (♂) refers to the… … Wikipedia
plant disease — ▪ plant pathology Introduction an impairment of the normal state of a plant that interrupts or modifies its vital functions. All species of plants, wild and cultivated alike, are subject to disease. Although each species is… … Universalium
Plant breeding — is the art and science of changing the genetics of plants in order to produce desired characteristics.[1] Plant breeding can be accomplished through many different techniques ranging from simply selecting plants with desirable characteristics for … Wikipedia
Male contraceptive — Male contraceptives include condoms, withdrawal (although medical professionals do not regard this as an effective method of contraception), and vasectomy.[1] In other animals, castration is commonly used for contraception. Other forms of male… … Wikipedia
sterile — [ster′əl; ] Brit & Cdn, usually [, ster′īl΄] adj. [L sterilis < IE * ster , barren (> Gr steira, barren, OE stierc, calf), special use of base * ster , stiff, rigid > STARE] 1. incapable of producing others of its kind; barren 2.… … English World dictionary
plant breeding — Introduction application of genetic (genetics) principles to produce plants that are more useful to humans. This is accomplished by selecting plants found to be economically or aesthetically desirable, first by controlling the mating of… … Universalium
plant — plantable, adj. plantless, adj. plantlike, adj. /plant, plahnt/, n. 1. any member of the kingdom Plantae, comprising multicellular organisms that typically produce their own food from inorganic matter by the process of photosynthesis and that… … Universalium
male-sterile — ˈ ̷ ̷| ̷ ̷ ̷ ̷ adjective : having male gametes lacking or nonfunctional a male sterile plant * * * /mayl ster il/ or, esp. Brit., / uyl/, adj. Bot. producing no pollen or infertile pollen. [1920 25] … Useful english dictionary
