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Registration of Five Winter Hardy Pea Germplasm Lines
Author(s) -
Auld D. L.,
Erickson D. A.,
Heikkinen M. K.,
Field L. A.
Publication year - 1988
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1988.0011183x002800050043x
Subject(s) - germplasm , dept , library science , biology , archaeology , geography , horticulture , computer science , genetics
maize crop which had developed severe levels of GLS. All trials were replicated in 11 by 11 lattices. These ear-to-row plots were evaluated for GLS, yield, stalk lodging, and maturity. Two subpopulations were developed from each synthetic: one based on high yield (HY) and the other on low disease (LD) as the major criterion. Remnant seeds of the selected ears (15-20% of the 120 ears tested) of each subpopulation were combined for the next cycle of selection and for an increase of seedstock for cycle 1 of each composite. The original synthetics used in these GLS resistant germplasms were derived as follows: PA Comp I (1) was developed as a source for stalk and root strength from 14 public inbred lines related to Iowa Stiff Stalk Synthetic (B14AHt, B37, B68, B73, H84, H91, H93, H100, OH514, OH509A, OH561, OH562, OH563, and PA864P). PA Comp II (1) was developed from 10 public inbred lines of Lancaster Surecrop origin related to C103 (B70, MO 17, NY821, PA901, VA35, VA36, VA58, VA59, VA60, and VA61). PA Comp III (1) was developed from 13 public inbreds of Lancaster Surecrop origin related to OH40B (A619, H95, H98, OH43, OH45B, OH545, PA70, PA83, PA762, PA870, PA70-18, VA26, and VA50). PA Pit Path Comp was developed to combine stalk strength and leaf blight resistance from a combination of 12 public inbred lines (A632, BHA, B37, B68, B73, H96, MO 17, PA762, PA887P, PA91, PA869, and VA26). The mean grain yield, grain moisture, erect plants, and disease ratings (GLS) for the high yield (HY) and low disease (LD) entries selected to produce the subpopulations of each of the four synthetics and those of the check hybrids are given in Table 1.