Announcements

Job offersmore »



Tweeting Growers

Top 5 - yesterday

Top 5 - last week

Top 5 - last month

Exchange ratesmore »




Effects of grafting on nutritional quality of field tomatoes

In a new study, the effects of grafting with interspecific hybrid rootstocks on field-grown tomato fruit quality were evaluated over a 2-year period. Fruit quality attributes from determinate ‘Florida 47’ tomato plants grafted onto either ‘Beaufort’ or ‘Multifort’ rootstocks were compared with those from non- and self-grafted controls.

Grafted plants had higher fruit yields than non- and self-grafted plants, and increased production of marketable fruit by ≈41%. The increased yield was accompanied by few major differences in nutritional quality attributes measured for these fruit. Although grafting with the interspecific rootstocks led to consistently small, but significant increases of fruit moisture (≈0.6%), flavor attributes such as total titratable acidity (TTA) and the ratio of soluble solids content (SSC) to TTA were not significantly altered.

Among the antioxidants evaluated, ascorbic acid concentration was reduced by 22% in fruit from grafted plants, but significant effects were not evident for either total phenolics or antioxidant capacity as assayed by oxygen radical absorbance capacity (ORAC). Levels of carotenoids (lycopene, β-carotene, and lutein) were similar in fruit from grafted plants with hybrid rootstocks compared with non- and self-grafted controls. Overall, the seasonal differences outweighed the grafting effects on fruit quality attributes.

This study showed that grafting with interspecific hybrid rootstocks could be an effective horticultural technique for enhancing fruit yield of tomato plants. Despite the modest reduction in ascorbic acid content associated with the use of these rootstocks, grafting did not cause major negative impacts on fruit composition or nutritional quality of fresh-market tomatoes.

Access the full study at HortScience

Publication date: 1/5/2017

 


 

Other news in this sector:

11/16/2017 Reduced ultraviolet light transmission increases insecticide longevity
11/15/2017 UK: Growers growing with a difference
11/14/2017 Indo-Dutch cooperation on crop residue management
11/14/2017 One step closer to crops with twice the yield
11/13/2017 Vegetable grafting: principles and practices
11/10/2017 More accurate crop research available
11/10/2017 US: $600,000 in grants to help specialty crop growers in Colorado
11/10/2017 South Africa: Western Cape could get Centre of Excellence
11/8/2017 Update on Dutch high wire trials in energy efficient systems
11/8/2017 Israeli season kicks off with high prospects, threats and opportunities
11/8/2017 US: Successful growing season with new arugula varieties
11/8/2017 Circadian clock discovery could help boost water efficiency in food plants
11/7/2017 Hungary to help modernise Uganda's agriculture sector
11/3/2017 US: Nebraska looks to solve global food security by sharing its knowledge of irrigation
11/2/2017 NFT cultivation system boosts Lebanese lettuce production
11/2/2017 US (MI): End of season for double-cropped raspberries under high tunnels
11/2/2017 UK: Ending water abstraction licensing exemptions
11/1/2017 "HPS and LED top lighting best tomato recipe in winter"
10/31/2017 Vegetable crop conservation in the U.S. National Plant Germplasm System
10/27/2017 Strong support to feed the world through boosting photosynthetic potential