Internode length in <i>Pisum</i>. The <i>lrs</i> mutation reduces gibberellin response and levels

MacKenzie‐Hose, Alasdair K.; Sherriff, Leanne J.; Ross, John J.; Reid, James B.

doi:10.1034/j.1399-3054.1998.1030406.x

Cited by 2 publications

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“…Several reports show that shoot elongation is tightly related to the level of endogenous GA1 (Ingram et al 1986; Ross et al 1989; Talon and Zeevaart 1990; Zeevaart and Gage 1993; Olsen et al 1995; Jensen et al 1996; Grindal et al 1998; MacKenzie‐Hose et al 1998). However, leaf elongation rate was slightly increased during the first hours following defoliation (A. Morvan‐Bertrand, J. Boucaud, J.…”

Section: Discussionmentioning

confidence: 99%

Endogenous gibberellins in Lolium perenne and influence of defoliation on their contents in elongating leaf bases and in leaf sheaths

Morvan‐Bertrand

Ernstsen

Lindgård

et al. 2001

Physiologia Plantarum

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Gibberellin (GA) levels in leaf sheaths and in elongating leafselected ion monitoring, was 7 times higher in elongating leaf bases of perennial ryegrass (Lolium perenne L. cv. Bravo) bases than in mature leaf sheaths. In both leaf tissues, defoliation induced an increase in GA 53 level, while GA 20 and GA 1 were monitored in undefoliated and defoliated plants. Nine C-13-hydroxylated GAs (GA 8 , GA 97 , GA 29 , GA 1 , GA 20 , levels decreased, suggesting that the GA 53 GA 44 , as well as GA 19 GA 20 , conversions were slowed down. The roles of GA 44 , GA 19 , GA 17 , GA 53 ) and one C-13-non-hydroxylated GA 1 in the control of leaf elongation and fructan mobilization GA (GA 9 ) were identified by combined gas chromatographymass spectrometry in leaf extracts. The total level of GA 8

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Section: Discussionmentioning

confidence: 99%

Endogenous gibberellins in Lolium perenne and influence of defoliation on their contents in elongating leaf bases and in leaf sheaths

Morvan‐Bertrand

Ernstsen

Lindgård

et al. 2001

Physiologia Plantarum

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Response of pea (Pisum sativum L.) to mepiquat chloride under varying application doses and stages

Elkoca¹,

Kantar²

2006

J Agronomy Crop Science

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Grown as a monoculture, peas (Pisum sativum L.) exhibit severe lodging after flowering and lodging causes yield reductions considerable. This study was conducted to investigate the effects of dose (untreated, 25, 50, 75 and 100 g a.i. ha )1 ) and stage (late vegetative, early blooming and early pod filling) of mepiquat chloride (MC) application on the growth, lodging control, seed yield and yield parameters of pea (Pisum sativum L.) under field conditions in Erzurum, Turkey in 2002 and 2003. Application doses of 25, 50, 75 and 100 g a.i. ha )1 significantly reduced stem height by 5.3 %, 7.2 %, 7.5 % and 6.4 % and increased stem width by 7.5 %, 12.7 %, 12.3 % and 15.7 % respectively, when compared with the untreated control, and thereby reduced the tendency of the crop to lodging. Increases of the seed yield under different application doses of MC ranged between 13.7 % and 20.1 % over the untreated control. However, in all parameters investigated, except for stem width, higher application doses of MC gave no clear advantages compared with the application dose of 25 g a.i. ha )1 . Seed yield was also significantly influenced by application stage of MC and application at early blooming stage of crop, MC significantly increased seed yield by 11.4 % and 10.2 % when compared with the late vegetative and the early pod filling stages respectively. Furthermore, the interaction of application dose and stage was significant, and spraying of pea plants with 25 g a.i. -ha )1 MC at early blooming stage has the most beneficial effects on the characters evaluated.

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Internode length in Pisum. The lrs mutation reduces gibberellin response and levels

Cited by 2 publications

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Endogenous gibberellins in Lolium perenne and influence of defoliation on their contents in elongating leaf bases and in leaf sheaths

Endogenous gibberellins in Lolium perenne and influence of defoliation on their contents in elongating leaf bases and in leaf sheaths

Response of pea (Pisum sativum L.) to mepiquat chloride under varying application doses and stages

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