conceived, designed and supervised the experiments analysed the data and edited the paper.Ĭompeting interests: The authors have declared that no competing interests exist.įield pea ( Pisum sativum L.) is a legume crop that is widely grown around the world with annual production of c. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.ĭata Availability: All relevant data are within the paper and its Supporting Information files.įunding: This research was funded by the Grain Research and Development Corporation ( ). Received: OctoAccepted: NovemPublished: November 19, 2018Ĭopyright: © 2018 Nguyen et al. PLoS ONE 13(11):Įditor: Roberto Papa, Università Politecnica delle Marche, ITALY Overall, our results demonstrated that this robust screening tool is highly applicable and will enable breeding programs to rapidly identify early vigour traits and utilise germplasm to contribute to the genetic improvement of field peas.Ĭitation: Nguyen GN, Norton SL, Rosewarne GM, James LE, Slater AT (2018) Automated phenotyping for early vigour of field pea seedlings in controlled environment by colour imaging technology. High correlation between normalised difference vegetation indices captured from the field trial and estimated shoot biomass and top-view area confirmed the consistent performance of early vigour field pea genotypes under controlled and field environments. Further analysis suggested that the estimated plant parameters collected at the linear growth phase can effectively differentiate early vigour across field pea genotypes. Plant growth analysis demonstrated that the “broken-stick” model fitted well with the growth pattern of all field pea genotypes and can be used to determine the linear growth phase. High correlation between estimated plant parameters derived from the automated phenotyping platform and important early vigour traits such as shoot biomass, leaf area and plant height indicated that the derived plant parameters can be used to predict vigour traits in field pea seedlings. To develop this tool, separate trials on 44 genetically diverse field pea genotypes were conducted in the automated plant phenotyping platform of Plant Phenomics Victoria, Horsham and in the field, respectively. Although breeding is considered the most effective approach to improve early vigour of field pea, the absence of a robust and high-throughput phenotyping tool to dissect this complex trait is currently a major obstacle of genetic improvement programs to address this issue. If the pods do not shell easily, they likely need to stay on the plant longer.Early vigour of seedlings is a beneficial trait of field pea ( Pisum sativum L.) that contributes to weed control, water use efficiency and is likely to contribute to yield under certain environments. Peas should be harvested when pods are full and shelling is easy. This will allow you to maximize garden space and produce more vegetables per square foot of garden. Plant two rows about 6″ apart, then skip over 3-4′ and plant another double row. Field peas, or “crowder peas”, do very well when planted on double rows. Because it has a semi-vining growing habit, allow 3-4′ of growing space for each row. Use a #5 seed plate, but always check the hole size and modify if necessary. We recommend planting Zipper Cream Pea using a walk-behind planter like our Hoss Garden Seeder. This variety is excellent when prepared fresh, but also preserves extremely well when blanched and frozen. The peas are large and creamy white peas that melt in your mouth when cooked. Each pod has a string that acts as a zipper that makes them a very easy variety to shell. Zipper Cream Pea gets it’s name from the ease of shelling and the creamy texture of the finished product. Zipper Cream is very heat-tolerant and performs well when planted in late spring and early fall. Plants will provide several harvests throughout their lifetime. Each plant produces many 6-9″ pods which are medium green in color and will fade slightly as peas mature. Plants grow to 2-3′ tall and are semi-vining, which provides excellent ground cover for weed suppression during growth. Zipper Cream Pea is a southern favorite the tastes like a beautiful blend between a cowpea and English pea.
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