Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
types of cambiumon the basis of the arrangement of the fusiform cells as seen in tangential section cambium is divided intoa storiedstratified
structure of the vascular cambiumthis meristem in the anatomical sense of the term usually includes two histologically distinct kinds of cellsi
vascular cambiumthe vascular cambium usually if not always has a dual origin within the primary tissues from provascular strands and from the ground
applications in horticulture and agriculture while going round in public parks you might have observed plants trimmed in such a way giving
ethylene - apical dominanceethylene also plays a role in the inhibition of lateral bud growth it is present in those tissues like shoot apex where
auxins - apical dominancethe role of auxins in controlling the apical dominance was shown by the experiments done by skoog and thimann with the broad
cytokinins - apical dominancecytokinins are also involved in the regulation of apical dominance wickson and thimann studied the interaction of
role of chemical factors in controlling apical dominance there were indications about the existence of plant hormones in the last part of 19th
terminology use in apical dominancehere are a few terms that will be used in discussing apical dominance a clear understanding of these terms is
apical dominanceapical dominance is a correlative phenomenon in the developmental biology of plants branching of the main shoot into lateral branches
molecular genetics and plant growth hormonemolecular genetics has advanced over the last three decades by leaps and bounds providing knowledge
tools and techniques - effects of plant growth regulators we have discussed about the effect of auxins in this section we shall discuss the
synergistic and sequential effects of hormonesin vitro studies on callus and suspension cultures have brought out two interesting findings the nature
abscission - effects of plant growth regulatorsabscission of leaves and fruit is one of the more obvious characteristics of senescence leaves do not
patterns of ageing and death plants and their parts develop continuously from germination until death the latter part of the developmental process
senescence - effects of plant growth regulators on developmentall five major growth regulator groups auxins gibberellins cytokinins abscisic acid and
aba - dormancyabscisic acid functions as an antagonist of all three promoters like iaa gas and cytokinins aba nullifies the activity of ga iaa and
ethylene - dormancyripening of fruits involves a chain of cellular events like rise in the rate of respiration breakdown of higher carbohydrates into
alpha- amylase activity by ga3 - dormancyof the enzymes required for the digestion of starch alpha-amylase appears immediately after the start of
iaa stimulates cell enlargement cell wall contains layer of cellulose fibrils and are normally quite rigid thus for a cell to grow there must be a
seed coat effects in some seeds dormancy is imposed by the presence of the seed coat if this is removed the seed germinates two possible types of
temperature - seed dormancylow temperature treatment is an essential prelude to germination in many seeds and high temperature may be inhibitory at
light requirement - seed dormancythe light requirement for germination of many seeds is presumably a mechanism that prevents the germination of small
seed dormancy - plant growth substancesseed dormancy is critically important for the survival of plants factors involved in seed dormancy area
bud dormancy - plant growth substancesenvironmental factorsthe most important factor inducing dormancy appears to be photoperiod short days induce