Effects of Radiation and Temperature on Tiller Survival, Grain Number and Grain Yield in Winter Wheat

Thorne, Gillian N.; Wood, D. W.

doi:10.1093/oxfordjournals.aob.a087330

Cited by 112 publications

(78 citation statements)

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“…Of the yield components, grain number/unit area was related most strongly with grain yield (r = 0.89, P < 0.001). Other studies (Gallagher et al 1975;Gales 1983;Fischer 1985;Anderson 1986;Thorne & Wood 1987;Acevedo et al 1991) have also shown high correlations between grain yield and grain number/unit area. Significant relationships did occur with ears/unit area (r = 0.62, P < 0.001) and grains/ ear (r = 0.35, P < 0.05).…”

Section: Yield and Yield Componentsmentioning

confidence: 82%

Nitrogen and dry matter partitioning of barley grown in a dryland environment

Ruiter

Brooking

1994

New Zealand Journal of Crop and Horticultural Science

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Fifty-eight spring malting barley crops (Hordeum vulgare L. 'Triumph') were monitored in the Rangitikei district, New Zealand (40°20'S), over three seasons beginning 1987/88 and covering a wide variation in soil moisture conditions during grain filling but small deficits before anthesis. The objectives were to: (1) document the range of variability of grain yield among locations and years; (2) determine if systematic patterns occurred in the dry matter (DM) accumulation and nitrogen (N) uptake; and (3) evaluate the effects these processes have on the partitioning of DM and N between the grain and the rest of the plant. Mean yearly grain yields (14% moisture) were 6.85, 5.12, and 5.07 t/ha, respectively. Grain number/m 2 accounted for 79% of the variation in grain yield. On average, 63% of the N in the above ground crop was derived from soil reserves, and 87% of the total N uptake occurred before anthesis. Pre-anthesis processes had a major effect on crop characteristics at maturity. For example, the level of crop N at anthesis (indicative of pre-anthesis N uptake) was a good predictor of the extent of post-anthesis partitioning H93059Received 30 August 1993; accepted 30 November 1993 of N to the grain (r = -0.75). Conversely, high postanthesis N uptake was generally not related to grain N concentration. Therefore, under dryland conditions, there is scope for improving yield by late applications of N without causing grain quality reductions. Management options for obtaining high yields of malting barley under non-irrigated conditions are discussed. These include the use of crop N concentration at anthesis as an indicator of crop N status.

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Section: Yield and Yield Componentsmentioning

confidence: 82%

Nitrogen and dry matter partitioning of barley grown in a dryland environment

Ruiter

Brooking

1994

New Zealand Journal of Crop and Horticultural Science

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“…Many reserachers report the influence of high temperature on tiller reduction (Cannell, 1969;Thorne and Wood, 1987;Hucl and Baker, 1990). Under ideal temperature conditions (15.5 to 20.5 °C), plants respond efficiently to tillering (Bos and Neuteboom, 1998).…”

Section: Resultsmentioning

confidence: 99%

Seeding density in wheat: the more, the merrier?

Valério

Carvalho

Benin

et al. 2013

Sci. agric. (Piracicaba, Braz.)

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“…A dry winter followed by high temperatures in 2005, especially from June to August, with an absolute maximum temperature above 30ºC and reduced rain (Embrapa Clima Temperado, 2007) had a large effect on NFT and WTG. Several authors point high temperatures as major causes for tillering reduction (Cannell, 1969;Thorne & Wood, 1987;Hucl & Baker, 1990). Under ideal temperature conditions, around 15 to 20ºC, plants would respond in an efficient manner to tillering (Mota, 1989), i.e., each genotype would have expressed its full potential for this character.…”

Section: Discussionmentioning

confidence: 99%

Seeding density in wheat genotypes as a function of tillering potential

Valério¹,

Carvalho²,

Oliveira³

et al. 2009

Sci. agric. (Piracicaba, Braz.)

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Seeding density adjustments is one of the practices that most influence grain yield, as well as other agronomic traits. Therefore, the objective of this study was to determine the ideal plant stand to achieve the maximum grain yield in genotypes showing differential tillering ability. Also, to establish the associations between the genotypes used with tillering and other agronomically important traits as weight of a thousand grains. Two experiments were conducted in 2005 and 2006 in Capão do Leão, Rio Grande do Sul state, Brazil. Five low (JURITI, BR 18, CEP 29, BR 18 and CD 108) and five high (CD 114, SAFIRA, FIGUEIRA, BRS 177 and UMBU) tillering potential wheat cultivars were tested for two years on a split-plot design. The results indicate the need for recommending cultivars based on more than one year of cultivation, especially when dealing with contrasting genotypes for the trait fertile tillers. Regarding the ideal plant stand, seeding density of low tillering ability genotypes ranges from 417 to 555 seeds m -2 , in order to obtain maximum yield and grain weight. On the other hand, for high tillering ability genotypes, the ideal stand ranges from 221 to 422 seeds m -2. These results were year independent. Furthermore, low tillering ability genotypes showed a closer association of number of fertile tillers with grain yield. However, an inverse association was found between number of fertile tillers and weight of a thousand grains.

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Effects of Radiation and Temperature on Tiller Survival, Grain Number and Grain Yield in Winter Wheat

Cited by 112 publications

References 0 publications

Nitrogen and dry matter partitioning of barley grown in a dryland environment

Nitrogen and dry matter partitioning of barley grown in a dryland environment

Seeding density in wheat: the more, the merrier?

Seeding density in wheat genotypes as a function of tillering potential

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