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CULTIVARS

Registration of ‘Windham’ Winter Feed Pea

^a USDA-ARS, 303 Johnson Hall, WSU, Pullman, WA 99164-6434
^b Central Agriculture Research Center, Montana State University, Moccasin, MT 59462. Contribution from USDA-ARS in cooperation with the College of Agriculture and Home Economics, Agricultural Research Center, Washington State Univ., Pullman, WA 99164

^* Corresponding author (kmcphee{at}wsu.edu).

‘Windham’ (Reg. No. CV-27, PI 647868) is a winter feed pea (Pisum sativum L.) developed by the USDA-ARS in cooperation with the Washington Agricultural Research Center, Pullman, WA, the Idaho Agricultural Experiment Station, Moscow, ID, and Central Agricultural Research Center, Montana State University, Moccasin, MT. Windham was approved for release at the spring 2006 meetings of the Washington State University Legume Variety Release Committee and the Montana State University Variety Release Committee. It was released based on superior agronomic adaptation, winter hardiness, and tolerance to harsh winter conditions. Fall-sown peas have higher yield potential, improved efficiency of field operations, and rotational and agronomic benefits in the farming system.

Windham originated as an F₆ selection from the cross CAH-61/D258-1-3/2/CAH-61/B686-320-0/3/D258-1-2 made in 1993 by F.J. Muehlbauer. CAH-61 is a winter-hardy green cotyledon pea with a dwarf growth habit and tendrilled leaf morphology conferred by the afila gene, af. D258-1-3 is a winter-hardy breeding line derived from the cross D19-1-3/Glacier with a dwarf plant habit conferred by the le gene and conventional leaf morphology. B686-320-0 is a multivirus resistant line (Provvidenti et al., 1991) that blooms at the 9th to 10th node, has a dwarf plant habit (le), and bears two white flowers per peduncle. Additionally, it has the dominant I gene for yellow cotyledons and the recessive r gene for wrinkled seeds. D258-1-2 is a sister line to D258-1-3, having the same phenotypic characters.

Windham has a dwarf growth habit and recessive af for tendrilled leaf morphology, resulting in an upright canopy through harvest, improving harvest ease and seed quality (Fig. 1 ). The improved agronomic performance and canopy structure give Windham an advantage to ‘Specter’ (McPhee and Muehlbauer, 2007) in many production systems. Vine length averages 57 cm, and the internodes appear in a zigzag manner. Four to six basal branches are typically formed in the fall as a short rosette before entering a winter dormant period. Normal, nonclasping stipules are moderately marbled. Flowering begins at the 18th node. Flowers are white, conferred by recessive a, and usually borne doubly on the peduncles with three flowers per peduncle observed occasionally. Pods are straight, blunt-ended, and medium green and contain four to six seeds. Seeds are smooth and round with yellow cotyledons. The testa is clear but is characterized by subtle mottling, referred to as "ghost mottling," resulting from the presence of dominant M in the presence of recessive a. Weight of 100 seeds averages 15.0 g. Presence of the subtle mottling and the small seed size make this cultivar undesirable in many edible pea markets for human consumption; however, the relatively small seed size and high yields make it an ideal pea for animal feed. Windham is resistant to race 1 of Fusarium wilt (caused by Fusarium oxysporum Schlecht. emend. Snyd. & Hans. f. sp. pisi) but is susceptible to pea enation mosaic virus and powdery mildew (caused by Erysiphe pisi DC).

View larger version (162K): [in this window] [in a new window]   Figure 1. ‘Windham’ winter feed pea.

Breeder and Foundation seed of Windham will be maintained by the Washington State Crop Improvement Association and the Montana State Crop Improvement Association. Supervision will be provided by the Department of Crop and Soil Sciences, College of Agriculture, Home Economics and Natural Resource Sciences, Washington State University; Department of Plant Science and Plant Pathology, Montana State University, Bozeman, MT; and the USDA-ARS.

Small quantities of seed of Windham can be obtained from the corresponding author for at least five years from the date of publication. Seed of this release is deposited in the National Plant Germplasm System where it will be available after five years for research purposes, including development and commercialization of new cultivars. It is requested that appropriate recognition be made if this cultivar contributes to the development of new germplasm or cultivars. U.S. Plant Variety Protection will not be sought for Windham.

Footnotes

All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher. Permission for printing and for reprinting the material contained herein has been obtained by the publisher.

Received for publication December 22, 2006.

References

• McPhee, K.E., and F.J. Muehlbauer. 2007. Registration of ‘Specter’ winter feed pea. J. Plant Reg. 1:118–119.
• Provvidenti, R., R.O. Hampton, and F.J. Muehlbauer. 1991. G-1000, Marx's pea breeding line for multiviral resistance. Pisum Genet. 23:50–52.

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