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While the Roma is an open-pollinated variety rather than a hybrid, it has been steadily improved to the point that most Roma tomato vines are verticillium- and fusarium wilt-resistant (thus the VF in the name). Most commercial plum tomatoes sold in markets in the Western Hemisphere are Romas or related types.
A plum tomato, also known as a processing tomato or paste tomato, is a type of tomato bred for sauce and packing purposes. It is generally oval or cylindrical in shape, with significantly fewer locules (seed compartments, usually only two) than standard round tomatoes and a generally higher solid content, making them more suitable for processing into paste.
A large fruited ‘Italian’ plum variety, which set well, even under cool conditions. They are known for being extremely juicy and delicious with a high yield. They are ideal for greenhouses and sunny sheltered spots outdoors. [58] Granadero Red 75 Hybrid Medium Roma Indeterminate Regular leaf A V F N T Very high yielding Roma tomato.
In the United States, San Marzano tomatoes are the genetic base for another popular paste tomato, the Roma tomato. The Roma is a cross between a San Marzano and two other varieties (one of which was also a San Marzano hybrid ), [ 4 ] and was introduced by the USDA 's Agricultural Research Service in 1955.
Campari is a type of hybrid tomato noted for its juiciness, high sugar level, low acidity, and lack of mealiness. Camparis are deep red and larger than a pear or cherry tomato, but smaller and rounder than common plum tomatoes.
This is one of the larger "paste" varieties of tomato, with fruit reaching 6 to 12 ounces (170 to 340 g). It varies widely in shape, from "oxheart" to plum. Although coreless, it is somewhat seedier and sweeter than normal paste cultivars. They ripen ca. 80 to 85 days after planting. [3]
Primary work is focused on developing tomatoes with new traits like increased resistance to pests or environmental stresses. [3] Other projects aim to enrich tomatoes with substances that may offer health benefits or be more nutritious. As well as aiming to produce novel crops, scientists produce genetically modified tomatoes to understand the ...
Grape tomatoes on the vine Cherry tomato on left grape tomatoes on right Grape tomatoes on the vine for sale at Ljubljana Central Market Grape tomatoes at a farmer's market. A grape tomato is a class of tomatoes believed to be of southeast Asian origin, shaped similarly to the oval plum tomatoes but having the small size and sweetness of cherry tomatoes.