Titlebook: Dispersal Biology of Desert Plants; Karen Rheede van Oudtshoorn,Margaretha W. Rooyen Book 1999 Springer-Verlag Berlin Heidelberg 1999 Anti

和音

小隔間

Robin Jones,Clive Maynard,Ian Stewartbracts, calyxes, awns) which cause the whole diaspore to move on the ground and propel the diaspore in a definite direction (McCann 1959). Trypanospermic or boring fruits are examples of antitelechoric dispersal mechanisms and are equipped with a hygroscopic drilling apparatus or with a sharply pointed tip which enables them to penetrate the soil.

創(chuàng)新

打擊

ALT

inculpate

Zoochory,d Shmida 1981; Van der Pijl 1982; Bregman 1988) and is generally associated with forests (Ridley 1930), and tropical and temperate communities (Tiffney 1984), although it is also prevalent in desert communities.

可觸知

Autochory,ereas others prevent dispersal and are antitelechoric (Fahn and Werker 1972). Ballistic dispersal, a form of telechoric autochory, occurs when the diaspore is propelled explosively, by a fruit that opens suddenly or by a triplever (Willson et al. 1990). It may be due to tension in dead hygroscopic t

Bouquet

induct

Restriction of Dispersal Due to Anchorage Mechanisms,ena differ vastly, the advantages conferred to the species by way of anchorage are similar. Myxospermic diaspores form a superficial layer of mucilage upon moistening, while trypanospermic diaspores have the ability to “drill” (bore) their diaspores into the soil.

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