Differential genotypic tolerance response to manganese stress in triticale

Xianguang, Zhang; Jessop, R. S.; Ellison, F. W.

doi:10.1080/00103629909370381

Cited by 6 publications

(4 citation statements)

References 11 publications

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“…2). Manganese toxicity is likely to affect root growth indirectly through the shoot injury caused by excess accumulation of Mn (Zhang et al, 1999 (Tang et al, 2003), is notable, and is in contrast to deficiencies of Zn Graham, 1995, 1996) and Mn (Khabaz-Saberi et al, 2002) that affect both root and shoot growth in wheat to a similar extent.…”

Section: Development Of a Screening Techniquementioning

confidence: 93%

Variation of tolerance to manganese toxicity in Australian hexaploid wheat

Khabaz‐Saberi

Rengel

Wilson

et al. 2010

Z. Pflanzenernähr. Bodenk.

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High concentrations of manganese (Mn), iron (Fe), and aluminium (Al) induced in waterlogged acid soils are a potential constraint for growing sensitive wheat cultivars in waterlogged-prone areas of Western Australian wheat-belt. Tackling induced ion toxicities by a genetic approach requires a good understanding of the existing variability in ion toxicity tolerance of the current wheat germplasm. A bioassay for tolerance to high concentration of Mn in wheat was developed using Norquay (Mn-tolerant), Columbus (Mn-intolerant), and Cascades (moderately tolerant) as control genotypes and a range of MnCl 2 concentrations (2, 250, 500, 750, 1000, 2000, and 3000 lM Mn) at pH 4.8 in a nutrient solution. Increasing solution Mn concentration decreased shoot and root dry weight and intensified the development of toxicity symptoms more in the Mnintolerant cv. Columbus than in Norquay and Cascades. The genotypic discrimination based on relative shoot (54% to 79%) and root dry weight (17% to 76%), the development of toxicity symptoms (scores 2 to 4) and the shoot Mn concentration (1428 to 2960 mg kg -1 ) was most pronounced at 750 lM Mn. Using this concentration to screen 60 Australian and 6 wheat genotypes from other sources, a wide variation in relative root dry weight (11% to 95%), relative shoot dry weight (31% to 91%), toxicity symptoms (1.5 to 4.5), and shoot Mn concentration (901 to 2695 mg kg -1 ) were observed. Evidence suggests that Mn tolerance has been introduced into Australian wheat through CIMMYT germplasm having "LERMO-ROJO" within their parentage, preserved either through a co-tolerance to Mn deficiency or a process of passive selection for Mn tolerance. Cultivars Westonia and Krichauff expressed a high level of tolerance to both Mn toxicity and deficiency, whereas Trident and Janz (reputed to be tolerant to Mn deficiency) were intolerant to Mn toxicity, suggesting that tolerance to excess and shortage of Mn are different, but not mutually exclusive traits. The co-tolerance for Mn and Al in ET8 (an Al-tolerant nearisogenic line) and the absence of Mn tolerance in BH1146 (an Al-tolerant genotype from Brazil) limits the effectiveness of these indicator genotypes to environments where only one constraint is induced. Wide variation of Mn tolerance in Australian wheat cultivars will enable breeding genotypes for the genetic solution to the Mn toxicity problem.

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Section: Development Of a Screening Techniquementioning

confidence: 93%

Variation of tolerance to manganese toxicity in Australian hexaploid wheat

Khabaz‐Saberi

Rengel

Wilson

et al. 2010

Z. Pflanzenernähr. Bodenk.

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“…Eight triticale genotypes which differed in Al tolerance were tested in nutrient solution for manganese tolerance (Zhang et al 1999b). A wide range of Mn tolerance was found but it did not correlate across genotypes with Al tolerance.…”

Section: Mineral Toxicitymentioning

confidence: 99%

The abiotic stress response and adaptation of triticale — A review

Blum¹

2014

Cereal Research Communications

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After a decade of genetic manipulation and improvement, triticale stand out as a crop of high biomass and grain yield potential which generally surpass that of wheat. Its high productivity is most likely derived from high rates of carbon assimilation linked to stomatal physiology and probably low respiration rate. Being a derivative of rye, triticale has always been assumed to be relatively resistant to abiotic stress. The last review of triticale adaptation to abiotic stress as published by Jessop (1996) pointed at its general and specific fitness to harsh growing conditions. This review as based on additional data published in the last 20 years indicates that triticale retain good to excellent adaptation to conditions of limited water supply and problem soils which involve salinity, low pH, defined mineral toxicities and deficiencies and waterlogging. Despite the understandable expectations, freezing tolerance of triticale was not found to be up to the level of rye. The freezing tolerance of the rye complement in triticale is inhibited by unknown factors on the wheat parent genome. Any given triticale cultivar or selection cannot be taken a priori as being stress resistant. Research has repeatedly shown that triticale presented large genetic diversity for abiotic stress resistance and most likely this diversity has not yet been fully explored due to the very limited research and the small studied sample of the potential triticale germplasm. Triticale is a valuable stress tolerant cereal on its own accord and a potential genetic resource for breeding winter and spring cereals. Because of its high productivity and resilience it might become as important as wheat or better on a global scale if its grain technological quality will be improved to the level of wheat.

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“…Despite increase in aluminium and manganese in some genotypes over initial values, many genotypes managed to perform better. Zhang et al (1999) reported such genotypic tolerance of plants to Al and Mn toxicity.…”

Section: Resultsmentioning

confidence: 99%

Aluminium toxicity on cowpea genotypes and its effect on plant and soil characteristics

Kushwaha

Pandey

Dubey

et al. 2016

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In order to observe the effect of aluminium toxicity on plant and soil parameters investigation was carried out on twenty cowpea genotypes grown in pots with four aluminium levels i.e. 0, 20, 40, 60 ppm with three replications following factorial complete randomized design. After five weeks of growth, individual, main effect and their interaction were studied for uptake of Aluminium and Manganese by root and shoot, post-cropping parameters of soil (pH, available P, extractable Al and extractable Mn) were observed. Genotypes of cowpea and aluminium treatments exhibited significant differences for all characters. However, interaction effect was found significant for all studied character except manganese content in soil. The genotypes G 2, G 3, G 5 and G 15 were found superior for studied character.

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Differential genotypic tolerance response to manganese stress in triticale

Cited by 6 publications

References 11 publications

Variation of tolerance to manganese toxicity in Australian hexaploid wheat

Variation of tolerance to manganese toxicity in Australian hexaploid wheat

The abiotic stress response and adaptation of triticale — A review

Aluminium toxicity on cowpea genotypes and its effect on plant and soil characteristics

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