سلام خوش آمدید  "چگونه نااميد شوم، وقتي كه تو مهربان و صميمي جوياي حال مني؟"

Plant Hormones

...plant hormones are endogenous organic compounds active at  very low concentration, produced in one tissue, and translocated to

another point in the plant where their effects on growth and  development are manifested.

Plant "hormones" are sometimes preferentially referred to as plant growth regulators

(PGR) because they differ from animal hormones in the following ways:

• Plant hormones are not made in specialized tissues

• Plant hormones do not have specific target tissues

• Plant hormones usually do not have specific effects

auxin (indoleacetic acid)

cytokinins (zeatin, zeatin riboside, isopentenyl adenine)

gibberellins (GAx...80)

abscisic acid (ABA)

ethylene

others (real and fabled; jasmonic acid, brassinolide, florigen, juvenone)

Class Endogenous Hormone Growth Regulators

auxin indoleacetic acid IBA, NAA, 2,4-D, others

cytokinin zeatin, zeatin riboside kinetin, BA, 2iP, TDZ

gibberellin GAx...80 GA3, GA4+7

abscisic acid abscisic acid (ABA)

ethylene ethylene Ethephon, Ethrel

Auxin (indoleacetic acid)...

...produced in apical and root meristems, young leaves, seeds in developing fruits.

ادامه 

+ نوشته شده در  شنبه بیست و پنجم مهر ۱۳۸۸ساعت 21:25  توسط   | 

 
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