Influence of Sink-Source Interaction on Dry Matter Production in Tomato

Heuvelink, E.; Buiskool, R.P.M.

doi:10.1006/anbo.1995.1036

Cited by 88 publications

(54 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Pelotas, UFPel, 2004. generativo, o que levaria a uma redução da proporção de matéria seca translocada para este. No entanto, para o meloeiro cultivado nas condições do presente trabalho, o aumento da densidade de plantio parece não ter afetado a força individual de fonte de cada planta, pois não diminuiu a translocação de biomassa para os frutos (Tabela 1), diferentemente do verificado por outros autores para o tomateiro (Heuvelink, 1995a(Heuvelink, , 1995bPapadopoulos & Pararajasingham, 1996) e para o pepino (Marcelis, 1993b(Marcelis, , 1996Peil & Gálvez, 2002b;Schvambach et al, 2001), que apresentaram uma redução na força de fonte (menor produção absoluta de matéria seca vegetativa da planta) na maior densidade de plantio. Para essas culturas, à escala da planta, pelo maior sombreamento que ocorre na maior densidade, há uma redução da força de fonte e da disponibilidade de fotoassimilados, reduzindo a proporção com que estes são destinados aos frutos, em benefício da fração destinada aos órgãos vegetativos.…”

Section: Resultsunclassified

“…Em outras hortaliças de frutos cultivadas em ambiente protegido, a proporção de distribuição de assimilados entre os diferentes órgãos da planta, sofre regulação pelos próprios drenos. Assim, a distribuição de matéria seca para os frutos estaria relacionada com a carga de frutos (número ou matéria total de frutos por planta), havendo um aumento da distribuição de assimilados para os frutos quando aumenta-se o número desses, conforme observado para o tomateiro (Heuvelink, 1997;Heuvelink, 1995a) e para o pepino (Marcelis, 1996;Peil & Gálvez, 2002a). Deve-se ter em conta que os frutos de meloeiro, quando analisados individualmente (Tabela Crescimento de frutos do meloeiro sob diferentes relações fonte:dreno 1 Matéria da fração vegetativa corresponde à soma: folhas + caule + pecíolos; 2 Médias seguidas pelas mesmas letras nas colunas, dentro de cada fator, não diferem significativamente pelo teste de Duncan (p≤5%) ( 1 matter of vegetative parts represented by leaves + stem + petioles; 2 means followed by the same small letter in the column did not differ from each other; Duncan, 5%) .…”

Section: Resultsunclassified

“…Muitos drenos limitam o crescimento de frutos, porém esse efeito é reduzido quando não há radiação limitante (Heuvelink, 1995a). O aumento do nú-mero de frutos não afetou o crescimento destes, sobretudo em termos de matéria seca, o que se deveu ao período de realização do ensaio (primavera-verão), no qual não houve limitação de radiação solar.…”

Section: Resultsunclassified

See 2 more Smart Citations

Crescimento de frutos do meloeiro sob diferentes relações fonte: dreno

Duarte¹,

Peil²,

Montezano³

2008

Hortic. Bras.

View full text Add to dashboard Cite

Palavras-chave:Cucumis melo, matéria seca, cultivo sem solo, carga de frutos, densidade de plantio. ABSTRACTFruit growth of melon plants submitted to different source:sink ratios An experiment was performed under protected environment from September/2004 to January/2005, to evaluate the effect of plant density and the number of fruits per plant on the growth of melon fruits cultivated in raw rice husk with recirculated nutrient solution. Three planting densities (1,7; 2,4 and 3,0 plants m -2 ) and two number of fruits/plant (3 and 4) were studied. From the data of dry and fresh matter, 68 days after setting, the biomass production and distribution to the fruits was established. The fruits comprised from 57 to 62% of the total above-ground dry matter production, which demonstrated that they are the strongest sinks for assimilates in melon. At the end of the vegetative period, the melon plant leaf area, when trained vertically and pruned, is relatively low, which in association with a high solar radiation, avoids an excess of mutual shading among the plants, even at higher planting densities. Thus, the increase of planting density does not affect the distribution of dry and fresh matter to the fruits, increasing the absolute plant and fruit biomass production per square meter. The increment of the number of fruits reduced the average dry weight of the fruits, without affecting the production and the distribution of dry matter of the whole plant and fruits. However, the production and the distribution of fresh matter to the fruits take up a different behavior from that of the dry matter, being both benefited with such an increment.

show abstract

Section: Resultsunclassified

See 1 more Smart Citation

Crescimento de frutos do meloeiro sob diferentes relações fonte: dreno

Duarte¹,

Peil²,

Montezano³

2008

Hortic. Bras.

View full text Add to dashboard Cite

show abstract

“…The proportion of dry matter partitioned to the fruit also varied by 9% between AW and WS seasons. Heuvelink and Buiskool (1995) suggested that dry matter partitioning was not directly affected by temperature, but instead by the indirect effects of rates of development and fruit numbers. Table 3 Cucumber The same letter in the same data column denotes no significant difference by LSD at the 5% level.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, partitioning to fruits was affected by fruit loading, thus decreasing the number of fruits per plant and thereby diminishing the proportion of total biomass allocated to the fruits (Heuvelink and Buiskool, 1995;Heuvelink, 1997). According to Lorenz and Maynard (1980), the low temperature limit (>18 C) for cucumber fruit growth indicates that low temperatures during late maturity may result in small numbers of fruits per plant and inhibit cucumber growth in the AW seasons.…”

Section: Discussionmentioning

confidence: 99%

Seasonal temperatures have more influence than nitrogen fertilizer rates on cucumber yield and nitrogen uptake in a double cropping system

Guo¹,

Li²,

Christie³

et al. 2008

Environmental Pollution

View full text Add to dashboard Cite

Nitrogen inputs can be reduced to minimize N losses to the environment while maintaining yields but N recommendations must reflect seasonal temperature effects.Abstract Two-year greenhouse cucumber experiments were conducted to investigate seasonal effects on fruit yield, dry matter allocation, and N uptake in a double-cropping system with different fertilizer management. Seasonal effects were much greater than fertilizer effects, and winterespring (WS) cucumber attained higher fruit yields and N uptake than autumnewinter (AW) cucumber due to lower cumulative air temperatures during fruit maturation in the AW season. Fertilizer N application and apparent N loss under recommended N management (Nmr) decreased by 40e78% and 33e48% without yield loss compared to conventional N management (Nmt) over four growing seasons. However, there were no seasonal differences in N recommendations, taking into consideration seasonal differences in crop N demand, critical nutrient supply in the root zone and N mineralization rate.

show abstract

Size development of tomatoes growing in trusses: linking time of fruit set to diameter

et al. 2020

View full text Add to dashboard Cite

BACKGROUND Size of fruit is an important issue in determining yield at harvest. Even under controlled conditions, variation between fruit and trusses can be considerable. As an easy to measure indication of size, the diameter of tomatoes growing in trusses was assessed in three experiments with different number of tomatoes per truss, as well as cultivars, and also by varying the level of ions in the recirculated drain water. RESULTS By applying the von Bertalanffy growth model, more than 99% of the variation present could be explained by the time of fruit set for all tomatoes growing anywhere in the trusses. A linear relationship between time of fruit set and the biological shift factor, an indication of developmental age, was observed. Integrating this linear relationship in the analysis of the diameter data removed one stochastic variable (biological shift factor), effectively halving the number of parameters to be estimated. CONCLUSION The results of the present study indicate that the major part of the variation present in the diameter of tomatoes growing in trusses is the result of variation in the time of fruit set of individual fruits. The position within the greenhouse (i.e. local differences in assimilates supply) exerted only a minor effect on diameter development. Accordingly, the time of fruit set largely determines fruit size. Likely, growing conditions before fruit set are crucial for final fruit size. The time of fruit set of each tomato in the truss and the local growing conditions within the greenhouse that affect assimilate supply need to be assessed accurately for a reliable size prediction.

show abstract

Influence of Sink-Source Interaction on Dry Matter Production in Tomato

Cited by 88 publications

References 14 publications

Crescimento de frutos do meloeiro sob diferentes relações fonte: dreno

Crescimento de frutos do meloeiro sob diferentes relações fonte: dreno

Seasonal temperatures have more influence than nitrogen fertilizer rates on cucumber yield and nitrogen uptake in a double cropping system

Size development of tomatoes growing in trusses: linking time of fruit set to diameter

Contact Info

Product

Resources

About