Enhanced pollenizer and method for increasing seedless watermelon yield

• US 7,528,298 B2
• Filed: 09/03/2004
• Issued: 05/05/2009
• Est. Priority Date: 03/05/2002
• Status: Expired due to Term

• Current Assignee: Syngenta Seeds, LLC (China National Chemical Corporation)
• Original Assignee: Syngenta Participations AG (China National Chemical Corporation)
• Inventors: Zhang, Xingping, Williams, Thomas Vare
• Primary Examiner(s): Kruse; David H
• Assistant Examiner(s): ROBINSON, KEITH O NEAL
• Application Number:
  US10/933,791
• Publication Number:
  US 20050050597A1
• Time in Patent Office: 1,705 Days
• Field of Search: 800/308
• US Class Current: 800/308
• CPC Class Codes: A01H 1/1215 Flower development or morphology, e.g. flowering promoting factor [FPF]
• CPC Class Codes: A01H 5/08 Fruits
• CPC Class Codes: Y02A 40/10 in agriculture

Abstract

An enhanced, diploid pollenizer watermelon plant and method used to maximize the yield of triploid seedless watermelons per area. The enhanced pollenizer watermelon plant of the invention is either a hybrid variety, an open-pollinated variety or a synthetic variety, that exhibits the characteristics of small leaves and fruit with a brittle rind that splits when the fruit is overripe or breaks when relatively small physical forces are applied. In one embodiment, the watermelon plant of the invention is also characterized by extended flowering duration, thereby increasing the number of triploid watermelon flowers that are pollinated and set fruit. The method for producing a seedless watermelon fruit, includes the steps of providing a pollenizer diploid watermelon plant, extending the duration of flowering of the pollenizer plant while reducing the number of such plants needed to pollinate the same number of triploid watermelon plants, and maximizing dispersal of the pollenizer watermelon plant throughout the field of triploid watermelon plants.

Claims

1. A watermelon plant comprising, at maturity:

a) a fruit, the rind of which breaks under a pressure of not more than about 1,800 g when a fruit tester with a 2 mm tip is used or under a pressure of not more than about 2,300 g when a fruit tester with a 3 mm tip is used; and

b) a 5th leaf from the smallest new leaf on a vine having a surface area of not more than about 50 cm²;

wherein said plant is produced by crossing a watermelon plant with a plant of NO1F3203B deposited under Accession No. PTA-4856;

obtaining a progeny; and

selecting for characteristics set forth in a) and b).

2. The watermelon plant of claim 1, wherein the rind of said fruit breaks under a pressure in the range of about 400 g to about 1,800 g when a fruit tester with a 2 mm tip is used.

3. The watermelon plant of claim 1, wherein said 5th leaf has a surface area in the range of about 15 cm² to about 50 cm².

4. The watermelon plant of claim 1, wherein the weight of said fruit is in the range of about 2 lbs to about 7 lbs.

5. A seed that produces the plant of claim 1.