Dynamics of biomass partitioning in field-grown radish varieties, treated with ethylenediurea

Diel trends in stomatal response to ozone and water deficit: a unique relationship of midday values to growth and allometry in Pima cotton?

“…These observations are consistent with previous evidence in upland and Pima cottons (Oshima et al 1979;Miller 1988;Temple et al 1988b;Temple 1990b;Grantz & Yang 1996) and in other species (McLaughlin et al 1982;Heggestad et al 1988;Miller 1988;Pell et al 1994). Responses of root biomass were also similar to those of the shoot and midday g s (Cooley & Manning 1987;Kostka-Rick et al 1993;Grantz & Yang 1996;Grantz et al 2006). The WD treatment reduced root biomass at low O 3 , but had no further effect at moderate or high O 3 , suggesting dominance by the responses to O 3 .…”

“…; Leone & Brennan ; Kostka‐Rick et al . ). In contrast, leaf insertion along the stem, the inverse of internode length, declined monotonically with O 3 exposure.…”

“…Responses of root biomass were also similar to those of the shoot and midday g s (Cooley & Manning ; Kostka‐Rick et al . ; Grantz & Yang ; Grantz et al . ).…”

Ethylene-di-urea (EDU), an effective phytoproctectant against O₃ deleterious effects and a valuable research tool

“…Repetition of EDU application to soil may result in uneven or unpredictable rates of EDU release from organic matter (Manning et al 2011). A dilemma occurs here: (a) reduce the concentration over time as to avoid any overestimated dosage (due to organic matter release), Hoshika et al 2013Tiwari and Agrawal, 2009Paoletti et al 2008Hoshika et al 2013Varshney and Rout, 1998Elliott et al 1987Long and Davis, 1991 Kostka-Rick and Manning, 1993bKostka-Rick et al 1993Kostka-Rick and Manning, 1993bCannon et al 1993Kostka-Rick and Manning, 1993aTiwari et al 2005 Ainsworth and Ashmore, 1992 Pleijel et al 1999Tiwari et al 2005Elliott et al 1987Pleijel et al 1999Tiwari et al 2005Elliott et al 1987 or (b) increase the concentration over time, especially in woody plants, because plants will have much higher proportion of biomass to supporting organs. This is an important issue that needs to be separately studied in order to better understand the organic matter influence on EDU antiozonate activity.…”

“…Moreover, there is a lack of evidence from EDU applications as a soil drench to woody plants, especially on the symbiosis with ectomycorrhizal fungi (ECM). We need to Singh et al 2010a, 2010bKostka-Rick et al 1993Wahid et al 2012Bisessar and Palmer, 1984Long and Davis, 1991Bisessar and Palmer, 1984Bisessar and Palmer, 1984Mersie et al 1994Astorino et al 1995Tiwari et al 2005Pleijel et al 1999Kostka-Rick et al 1993 Kostka-Rick and Manning, 1993aElagoz and Manning, 2005Cannon et al 1993Cannon et al 1993Tonneijck and van Dijk, 1997Szantoi et al 2007Kostka-Rick and Manning, 1993aSingh et al 2010a, 2010bKostka-Rick and Manning, 1993aHassan et al 1995Kostka-Rick and Manning, 1993aFumagalli et al 1997Elliott et al 1987Hassan et al 1995Manning et al 2003Szantoi et al 2007Kostka-Rick and Manning, 1993a understand whether EDU per se affects ECM and, if it does, how ECM will respond to such effects in long-term.…”