1a. Objectives (from AD-416):
The primary objective of this proposal is to develop improved chickpea varieties. Sub-objectives include making crosses between elite chickpea breeding lines and screening breeding materials for disease resistance, seed protein content and seed mineral concentration.
1b. Approach (from AD-416):
Cross will be made in the greenhouse and the field between elite chickpea lines and varieties. Parental lines will be selected based on performance in preliminary and advanced yield trials for a range of agronomic traits including seed size and color, yield, and early maturity. Hybrids are increased in the greenhouse and subjected to multiple cycles of self pollination to produce segregating bulk populations. Segregating bulk populations (F3-F6) will be grown in the field and selected for seed type (size, shape and color), height and lodging tolerance, and early maturity. Preliminary selections will be evaluated in the field at a single location. Advanced selections will be evaluated in yield trials conducted at multiple locations. Breeder seed will be produced from two elite breeding lines for subsequent varietal releases. Single plant selections, preliminary breeding lines and advanced breeding lines will be screened for resistance to Ascochyta blight. Preliminary and advanced breeding lines will be screened for seed protein content and seed mineral concentration.
3. Progress Report:
This research relates to objective 1 of the associated in-house project “Develop and release new varieties and germplasm of peas, lentils, and chickpea that have higher seed mineral concentrations; improved host-plant resistance to Aphanomyces root rot, Sclerotinia wilt and Ascochyta blight; and higher yields than existing commercial varieties”. In 2013, advanced yield trials for peas, lentils, and chickpeas were planted at several locations in Washington and Idaho. Breeding lines, commercial varieties, and populations are being evaluated in field nurseries for reaction to several diseases including Ascochyta blight, Fusarium wilt, and Aphanomyces root rot. Chickpea populations are being examined with DNA markers in the laboratory and evaluated in the field for important traits including disease resistance, maturity, yield, and seed size.