Heat stress during late vegetative growth of maize effects on phenology and assessment of optimum temperature
Prediction of phenology is based on thermal time [TT] computation, which requires the correct definition of base [TB] and optimum [TO] temperatures. Most information on these traits came from controlled environments using a wide range of mean air temperatures [TX], including TX greather than TO and...
Guardado en:
| Autor principal: | |
|---|---|
| Otros Autores: | , |
| Formato: | Artículo |
| Lenguaje: | Inglés |
| Materias: | |
| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2010Cicchino.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| LEADER | 05806cab a22007577a 4500 | ||
|---|---|---|---|
| 001 | AR-BaUFA000131 | ||
| 003 | AR-BaUFA | ||
| 005 | 20220309113210.0 | ||
| 008 | 181208t2010 |||||o|||||00||||eng d | ||
| 999 | |c 46565 |d 46565 | ||
| 022 | |a 0011-183X | ||
| 024 | |a 10.2135/cropsci2009.07.0400 | ||
| 040 | |a AR-BaUFA |c AR-BaUFA | ||
| 100 | 1 | |a Cicchino, Mariano Andrés |9 32548 | |
| 245 | 0 | 0 | |a Heat stress during late vegetative growth of maize |b effects on phenology and assessment of optimum temperature |
| 520 | |a Prediction of phenology is based on thermal time [TT] computation, which requires the correct definition of base [TB] and optimum [TO] temperatures. Most information on these traits came from controlled environments using a wide range of mean air temperatures [TX], including TX greather than TO and TX less than TB. These conditions are rarely found in field environments. We assessed the effect on development of day-time temperatures above TO during late-vegetative growth of maize [Zea mays L], and established a model based on TT computation on a per hour [TTh, in °C h] rather than per day basis [TTd] for TO estimation. Field experiments included two temperature regimes [TC: control; TH: heated] between V11 and tasseling of TC. We registered temperature at ear level, and dates of anthesis and silking. We computed developmental rates [DR], TTh above 8°C during treatment period [TTh1] and between V11 and silking [TTh2], a stress index based on the quotient of differences in TTh [deltaTTh] between TH and TC [SI = deltaTTh2/deltaTTh1], and TO. Heat stress caused a delay in flowering events, and a decline in DRs. Estimated TB was higher [12.7°C] than normally used in computations. Estimated TO was within the expected range [36°C greather thanTO greather than 30°C], independently of TB. Stressful temperatures promoted a delayed in silking, identified as an increase of at least 2.14°C h in TTh for each degree above TO. Estimated TO differed between growing seasons [P = 0.04], suggesting possible variation due to climatic effects. | ||
| 653 | 0 | |a ZEA MAYS | |
| 700 | 1 | |9 34831 |a Rattalino Edreira, Juan Ignacio | |
| 700 | 1 | |9 5930 |a Otegui, María Elena | |
| 773 | |t Crop Science |g Vol. 50, no. 4 (2010) 1431-1437 | ||
| 856 | |u http://ri.agro.uba.ar/files/intranet/articulo/2010Cicchino.pdf |i En reservorio |q application/pdf |f 2010Cicchino |x MIGRADOS2018 | ||
| 856 | |u http://www.crops.org/ |x MIGRADOS2018 |z LINK AL EDITOR | ||
| 900 | |a as | ||
| 900 | |a 20131220 | ||
| 900 | |a N | ||
| 900 | |a SCOPUS | ||
| 900 | |a a | ||
| 900 | |a s | ||
| 900 | |a ARTICULO | ||
| 900 | |a EN LINEA | ||
| 900 | |a 0011183X | ||
| 900 | |a 10.2135/cropsci2009.07.0400 | ||
| 900 | |a ^tHeat stress during late vegetative growth of maize^seffects on phenology and assessment of optimum temperature | ||
| 900 | |a ^aCicchino^bM. | ||
| 900 | |a ^aRattalino Edreira^bJ.I. | ||
| 900 | |a ^aOtegui^bM.E. | ||
| 900 | |a ^aCicchino^bM. A. | ||
| 900 | |a ^aRattalino Edreira^bJ. I. | ||
| 900 | |a ^aOtegui^bM. E. | ||
| 900 | |a ^aCicchino^bM.^tInstituto Nacional de Tecnologia Agropecuaria [INTA], Agencia de Extensión Chascomús, Chascomús, Argentina | ||
| 900 | |a ^aRattalino Edreira^bJ.I.^tDepartamento de Producción Vegetal, Fac-ultad de AgronomÃa and Instituto de Fisiologia y EcologÃa Vinculado a la, Agricultura [IFEVA] of the National Council for Research [CONICET], Av. San MartÃn 4453 [C1417DSE], Ciudad de Buenos Aires, Argentina | ||
| 900 | |a ^aOtegui^bM.E. | ||
| 900 | |a ^tCrop Science^cCrop Sci. | ||
| 900 | |a en | ||
| 900 | |a 1431 | ||
| 900 | |a ^i | ||
| 900 | |a Vol. 50, no. 4 | ||
| 900 | |a 1437 | ||
| 900 | |a ZEA MAYS | ||
| 900 | |a Prediction of phenology is based on thermal time [TT] computation, which requires the correct definition of base [TB] and optimum [TO] temperatures. Most information on these traits came from controlled environments using a wide range of mean air temperatures [TX], including TX greather than TO and TX less than TB. These conditions are rarely found in field environments. We assessed the effect on development of day-time temperatures above TO during late-vegetative growth of maize [Zea mays L], and established a model based on TT computation on a per hour [TTh, in °C h] rather than per day basis [TTd] for TO estimation. Field experiments included two temperature regimes [TC: control; TH: heated] between V11 and tasseling of TC. We registered temperature at ear level, and dates of anthesis and silking. We computed developmental rates [DR], TTh above 8°C during treatment period [TTh1] and between V11 and silking [TTh2], a stress index based on the quotient of differences in TTh [deltaTTh] between TH and TC [SI = deltaTTh2/deltaTTh1], and TO. Heat stress caused a delay in flowering events, and a decline in DRs. Estimated TB was higher [12.7°C] than normally used in computations. Estimated TO was within the expected range [36°C greather thanTO greather than 30°C], independently of TB. Stressful temperatures promoted a delayed in silking, identified as an increase of at least 2.14°C h in TTh for each degree above TO. Estimated TO differed between growing seasons [P = 0.04], suggesting possible variation due to climatic effects. | ||
| 900 | |a 50 | ||
| 900 | |a 4 | ||
| 900 | |a 2010 | ||
| 900 | |a ^cH | ||
| 900 | |a AAG | ||
| 900 | |a AGROVOC | ||
| 900 | |a 2010Cicchino | ||
| 900 | |a AAG | ||
| 900 | |a http://ri.agro.uba.ar/files/intranet/articulo/2010Cicchino.pdf | ||
| 900 | |a 2010Cicchino.pdf | ||
| 900 | |a http://www.crops.org/ | ||
| 900 | |a http://www.scopus.com/inward/record.url?eid=2-s2.0-77953947103&partnerID=40&md5=e99fe99bb2cf13a93a81dd77353995b6 | ||
| 900 | |a ^a^b^c^d^e^f^g^h^i | ||
| 900 | |a OS | ||
| 942 | 0 | 0 | |c ARTICULO |2 udc |
| 942 | 0 | 0 | |c ENLINEA |2 udc |