Lab 6 Worksheet.pdf - .J Laboratory Exercse 6 A I I PhotoPeriodism in daylength Phois the response of plants to.changes As discussed in chapter 10

Lab 6 Worksheet.pdf - .J Laboratory Exercse 6 A I I...

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.J A I I ,l _^ l I .1 I I l. Laboratory Exercse 6 PhotoPeriodism As discussed in chapter 10, photoperiodism is the response of plants to.changes in daylength' Pho- toperiodism alows prants to respond to seasonar changes that may result in more favorable or unfa- ""'tlh?Til[:;3Xt:',1"Ji; etzeas a guid",.119ll-:-':if if :::H:Till*:x3::";L';i# o,,t the ror- lowing table that i[ustrates th;;;;poir" of flowering to .nu"giig photoperiod' In each case' show *t "tti"t the plant will flower or remain vegetative' Table 6-1 Flowering response to photoperiod' Environment Long-day PlantTYPe Short-daY Day-neutral Long daY-short night Short daY-long night Short day-night broken by a short period of light 24 hours continuous light Lto,;er/ W 9\ o t-rcrr t\ r.^rc tt." eaf fO .(g'5(:rY\be lill ,t I ry { e/9e/LdE\JO I;: t: l: l,^ t': I ,"" l:: l;^ l__;^ ',..1 l;^ .a, I ,t^ l,; -'J It,. r:; l.; !; Light and Seed Germination some seeds, especially weed seeds, are photoperiod sensitive which assures that they will not germi- nate during the wrong season. However, many other seeds utu iigt'i sensitive but are not photoperiod sensitive. These seeds require rignt Lf u rrury ihort duration to ge"rminate. lhllochrome also functions in this system, but germination ii triggered when-p, is convol"a to Pg, by light' This light requirement for germination o.Jr* mostly in smatt seeds ,u"n'as pigweed and tedtucl, and assures the seed that it is crose enough to reach the soil surface with its limited food reserves. TEMPERATURE Read remperature onpages 161-163. Temperature affects nearly all of the physiological processes in the plant including growth, flowering una "'rr"n photoperiodic response.
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  • Fall '17
  • Tucker
  • Plant Nutrition, total accumulated GDD, toperiodism alows prants

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