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  • Modern corn varieties have been selected for their ability to maintain productivity in dense plantings. We have tested the possibility that the physiological consequence of the selection of the modern hybrid, 3394, for increased crop yield includes changes in responsiveness to auxin and light. Etiolated seedlings in the modern line are shorter than in an older hybrid, 307, since they produce shorter coleoptile, mesocotyl, and leaves (blade as well as sheath). Etiolated 3394 seedlings as well as isolatedmesocotyl and sheath segments were less responsive to auxin and an inhibitor of polar auxin transport, NPA. Reduced response of 3394 to auxin was associated with less reduction of elongation growth by light (W, R, FR, B) than in 307, whereas activity of polar auxin transport (PAT) and its reduction by R or FR were similar in both genotypes. NPA reduced PAT in etiolated 3394 seedlings much less than in 307. A characteristic feature of 3394 plants is more erect leaves. In both hybrids, light (W, R, B) in
  • Modern corn varieties have been selected for their ability to maintain productivity in dense plantings. We have tested the possibility that the physiological consequence of the selection of the modern hybrid, 3394, for increased crop yield includes changes in responsiveness to auxin and light. Etiolated seedlings in the modern line are shorter than in an older hybrid, 307, since they produce shorter coleoptile, mesocotyl, and leaves (blade as well as sheath). Etiolated 3394 seedlings as well as isolatedmesocotyl and sheath segments were less responsive to auxin and an inhibitor of polar auxin transport, NPA. Reduced response of 3394 to auxin was associated with less reduction of elongation growth by light (W, R, FR, B) than in 307, whereas activity of polar auxin transport (PAT) and its reduction by R or FR were similar in both genotypes. NPA reduced PAT in etiolated 3394 seedlings much less than in 307. A characteristic feature of 3394 plants is more erect leaves. In both hybrids, light (W, R, B) in (en)
Title
  • Light interacts with auxin during leaf elongation and leaf angle development in young corn seedlings
  • Light interacts with auxin during leaf elongation and leaf angle development in young corn seedlings (en)
skos:prefLabel
  • Light interacts with auxin during leaf elongation and leaf angle development in young corn seedlings
  • Light interacts with auxin during leaf elongation and leaf angle development in young corn seedlings (en)
skos:notation
  • RIV/61989592:15410/03:00001344!RIV/2004/MSM/154104/N
http://linked.open.../vavai/riv/strany
  • 366-376
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM 153100008)
http://linked.open...iv/cisloPeriodika
  • 3
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
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http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 613544
http://linked.open...ai/riv/idVysledku
  • RIV/61989592:15410/03:00001344
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Auxin, elongation, leaf angle, light, polar auxin transport, Zea (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV
  • [0C54F12453EC]
http://linked.open...i/riv/nazevZdroje
  • Planta
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http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...ocetUcastnikuAkce
http://linked.open...nichUcastnikuAkce
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 216
http://linked.open...iv/tvurceVysledku
  • Fellner, Martin
  • Cocke, A. E.
  • Ford, E. D.
  • Horton, L. A.
  • Van Volkenburgh, E.
http://linked.open...n/vavai/riv/zamer
issn
  • 0032-0935
number of pages
http://localhost/t...ganizacniJednotka
  • 15410
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