Broccoli yield response to environmental factors in sustainable agriculture

Ciancaleoni, Simona; Onofri, Andrea; Torricelli, Renzo; Negri, Valeria

doi:10.1016/j.eja.2015.09.009

Cited by 18 publications

(15 citation statements)

References 43 publications

(48 reference statements)

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“…Calabrese is sensitive to variation in soil N and water availability, which can often lead to a lack of uniformity in the crop 16 . Therefore, it is relevant that nutrient delivery to roots and amelioration of drought stress are just two of the benefits that PGPR can provide to plants 11 .…”

Section: Introductionmentioning

confidence: 99%

Plant growth-promoting rhizobacteria promote plant size inequality

Gange

Gadhave

2018

Sci Rep

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The uniformity of crop yield is extremely important for consumers and of as much relevance to the grower as overall yield. However, size inequality within a plant population is rarely measured and has never before been considered in relation to the use of beneficial microbes for yield enhancement. For the first time, we show that addition of soil bacteria to calabrese plants significantly increased size inequality. These effects were usually more apparent in above-ground biomass. This was caused by some (but not all) plants growing very large when inoculated with bacteria, while control plants were mostly small. We suggest that the main reason is the incompatibility of the inoculated bacteria with those already present in the rhizosphere. In some cases the inoculum matched the indigenous community, providing a benefit to plant growth, while often it did not and plants remained relatively small. We conclude that analyses of size inequality should be an integral part of experiments using microbial soil amendments. These analyses can help to inform the production of more effective microbial products and to ensure that the integration of beneficial microbes into sustainable production systems does not impair uniformity in yield.

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Section: Introductionmentioning

confidence: 99%

Plant growth-promoting rhizobacteria promote plant size inequality

Gange

Gadhave

2018

Sci Rep

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“…However, the results found in the present study for this characteristic are similar to those found by Melo et al (2010), who evaluated the yield of singleinflorescence broccoli cultivars in the summer, under no-tillage, and found diameters of 13.10 to 15.30 cm. This variable shows the inflorescence size and expresses the genetic potential of the cultivar, its ability to interact with environmental factors (CIANCALEONI et al, 2016), and the plant physiological and molecular responses that represent its tolerance to environmental stresses (ATKINSON; URWIN, 2012).…”

Section: Dfbw Dsw Dlw Tdiw --------------------G Plant -1 -----------mentioning

confidence: 99%

Inflorescence Production of Broccoli Cultivars in the Hot and Humid Climate of Central Amazonia1

et al. 2020

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Broccoli has great economic, social, and nutritional importance. Genetic improvements through breeding programs for this species made available cultivars with satisfactory production in hot and humid climates. Two experiments were conducted to evaluate the inflorescence production of broccoli cultivars (Ramoso and Cabeça groups) in the hot and humid climate of Central Amazonia. In experiment 1, Ramoso group cultivars were evaluated (Verão Ramoso Piracicaba, Ramoso Santana, Piracicaba, Piracicaba Precoce, Ramirez F1, Hanabi, Piracicaba Precoce Verão, and Hanapon ). In experiment 2, Cabeça group cultivars were evaluated (Green Storm, Strong, TPX-00925, Salinas F1, Bibou, Domador, Burney, and BRO 68 ). A randomized block experimental design was used, with eight treatments consisted of cultivars, and four replications for each experiment. Quantitative variables were evaluated, including inflorescence fresh and dry weights; and the qualitative variables evaluated showed the occurrence of undesirable characteristics in the inflorescences. Significant differences were found within the Ramoso group cultivars and within the Cabeça group cultivars evaluated. The broccoli cultivars that showed the best inflorescence production in the humid, hot climate of Central Amazonia were Verão Ramoso Piracicaba, Piracicaba Precoce Verão, Ramoso Santana, and Piracicaba Precoce of the Ramoso group; and Green Storm and Burney of the Cabeça group.

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“…Agronomic performances of different broccoli heterogeneous varieties or broccoli breeding materials for sustainable agriculture have been already reported [5,[27][28][29], but few data are available on genetic diversity of broccoli breeding materials [30] and on their evolution and adaptations under different agro-climatic conditions.…”

Section: Example Genetic Changes In Maize Composite Populations Undementioning

confidence: 99%

A method for obtaining flexible broccoli varieties for sustainable agriculture

Ciancaleoni

Negri

2019

Preprint

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BackgroundThe use of high inputs in agriculture has resulted in few varieties (hybrids and pure lines) used in all agricultural systems. Also varieties of vegetables, including broccoli (Brassica oleracea L.), for organic and low-input agriculture, are almost exclusively hybrids, due to lack of specific breeding programs and varieties for sustainable agriculture.A strategy to overcome this issue is the adoption of specific breeding programs for developing heterogeneous varieties (i.e. synthetics, open pollinated varieties, composite cross populations and mixtures). The heterogeneous varieties, in fact, are able to evolve and adapt to specific agro-climatic conditions.Aim of this study was to develop a method (an Evolutionary Breeding Program, EBP) for obtaining heterogeneous varieties and test its efficiency in giving rise to highly diverse varieties, as needed in sustainable agriculture.A synthetic variety originated from a landrace was multiplied in different environments for 3 cycles and morpho-phenological and genetic diversity of the derived populations was assessed. ResultsThe resulted presented are the first and unique indication about the efficiency of a short-time EBP for an allogamous species like broccoli.Few morphological changes were observed among varieties multiplied in different environments with different agro-climatic conditions. This could be probably due to the initial genetic diversity of the landrace from which the populations were selected and to the great plasticity of the crop. However, SSR data highlighted a genetic differentiation among populations multiplied for two/three years across Europe and in Central Italy, that was not so evident with morphological data. ConclusionsFew years of multiplication in different environments resulted in genetically differentiated broccoli populations that none the less preserved the original genetic diversity and productivity level and appear to evolve in relationship to different environments: the applied EBP is useful for developing

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Broccoli yield response to environmental factors in sustainable agriculture

Cited by 18 publications

References 43 publications

Plant growth-promoting rhizobacteria promote plant size inequality

Plant growth-promoting rhizobacteria promote plant size inequality

Inflorescence Production of Broccoli Cultivars in the Hot and Humid Climate of Central Amazonia1

A method for obtaining flexible broccoli varieties for sustainable agriculture

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