Definition of protandrous in English:

protandrous

Syllabification: prot·an·drous
Pronunciation: /prōˈtandrəs
 
/

adjective

Botany & Zoology
(Of a hermaphrodite flower or animal) having the male reproductive organs come to maturity before the female. The opposite of protogynous.
More example sentences
  • It is a wind-pollinated species, with hermaphroditic protandrous flowers (the first two days as male and three last days as female).
  • In many protandrous spiders, adult males cohabit with juvenile females nearing sexual maturity, and this may provide an index of expected mate availability for females.
  • Perfect flowers are protandrous, hence the stigmas open after anthesis, which reduces the probability of autogamous self-pollination.

Derivatives

protandry

Pronunciation: /-ˈandrē/
noun
More example sentences
  • Under natural photoperiodic conditions protandry in hermaphrodite disc flowers of sunflower is determined by the different elongation rates of the style and filaments.
  • The temporal aspects of stigma receptivity and pollen longevity were investigated in relation to protandry (the occurrence of anther dehiscence prior to stigma receptivity) and breeding system.
  • Predictions from the above hypotheses are not mutually exclusive, and associations between protandry and sexual dimorphism may be promoted by complex interactions between the suggested mechanisms acting in concert.

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