NIRS determination of non-structural carbohydrates, water soluble carbohydrates and other nutritive quality traits in whole plant maize with wide range variability

Onions (Allium cepa L.) with ≥18% bulb dry weight are dehydrated and used for spices and food ingredients. Bulb weight characteristics and water-soluble carbohydrates (WSC) of two commercial dehydrator cultivars, GS02 and GS04, and a breeding population, NM9335, were studied before and after maturity to observe phenotypic traits that may be useful for selection during breeding programs, and to study dehydrator onion carbohydrate physiology. At maturity, NM9335, GS02, and GS04 bulbs had 11.9 ± 0.33%, 18.6 ± 0.27%, and 19.4 ± 0.40% dry weight, respectively. Mature GS04 plants had 76.5 ± 0.01% of whole plant dry weight in bulbs, which is an extraordinarily high crop harvest index. NM9335 bulbs had higher fresh (hydrated) weight than bulbs of GS04 and GS02, but bulbs in all populations accumulated similar amounts of dry weight. Bulb percent dry weight before maturity did not indicate percent dry weight at maturity in the high-solids commercial onion cultivars. Bulb percent dry weight declined slightly after maturity in all populations. Glucose, fructose, and sucrose were relatively low, and fructans with degree of polymerization ≥6 were relatively high in GS04, but the converse was observed in NM9335. Relative amounts of GSO4 bulb fructan increased sequentially, in order of rank, from DP4 to DP6, but the converse was observed for NM9335.

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Effect of sample drying on the determination of fibre and water-soluble carbohydrates of maize silage

Grass and Forage Science ◽

10.1111/j.1365-2494.1987.tb02119.x ◽

1987 ◽

Vol 42 (3) ◽

pp. 319-321 ◽

Cited By ~ 3

Author(s):

ROBERTA PICCAGLIA ◽

GUIDO C. GALLETTI

Keyword(s):

Water Soluble ◽

Soluble Carbohydrates ◽

Maize Silage ◽

Water Soluble Carbohydrates

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Tolerance of combined drought and heat stress is associated with transpiration maintenance and water soluble carbohydrates in wheat grains

10.1101/2020.05.08.085118 ◽

2020 ◽

Author(s):

Abdeljalil El Habti ◽

Delphine Fleury ◽

Nathaniel Jewell ◽

Trevor Garnett ◽

Penny J. Tricker

Keyword(s):

Heat Stress ◽

Water Use ◽

Vapour Pressure Deficit ◽

Water Soluble ◽

Soluble Carbohydrates ◽

Plant Water ◽

Plant Water Use ◽

Whole Plant ◽

Water Soluble Carbohydrates ◽

Drought And Heat Stress

AbstractWheat (Triticum aestivum L.) production is increasingly challenged by simultaneous drought and heatwaves. We assessed the effect of both stresses combined on whole plant water use and carbohydrate partitioning in eight bread wheat genotypes that showed contrasting tolerance. Plant water use was monitored throughout growth, and water-soluble carbohydrates (WSC) and starch were measured following a three-day heat treatment during drought. WSC were predominantly allocated to the spike in modern Australian varieties, whereas the stem contained most WSC in older genotypes. Combined drought and heat stress increased WSC partitioning to the spike in older genotypes but not in the modern varieties. Glucose and fructose concentrations in grains measured 12 days after anthesis were associated with final grain weight in the main spike. At the whole plant level, combined drought and heat stress differentially altered daily water use and transpiration response to vapour pressure deficit during grain filling, compared to drought only. Final grain yield was increasingly associated with aboveground biomass and total water use with increasing stress intensity. Ability to maintain transpiration, especially following combined drought and heat stress, appears essential for maintaining wheat productivity.One sentence summaryHigher yield following drought and heat stress in wheats that maintain transpiration and have higher water-soluble carbohydrates content in grains.

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