Yield Components in Three Meadowfoam Lines
- Timothy E. Fiez,
- O. Steven Norberg and
- Gary D. Jolliff *
Future development of high-yielding meadowfoam (Limnanthes R. Br. spp.) cultivars may be enhanced if relationships between oil yield, yield components, and agronomical, phenological, and morphological traits can be established. To identify such relationships, two half-sib L. floccosa Howell ssp. grandiflora Arroyo × L. alba Hartw. ex Benth. ssp. alba lines, ORL85-765 and ORL85-729, and ‘Mermaid’ meadowfoam were grown and compared in solid stand in 1987–1988 and 1988–1989 at the Oregon State University Schmidt Farm. Line 85-765 produced the greatest oil yield in 1987–1988. Seed weight of line 85-765 was 18 and 13% greater (P < 0.05) than lines 85-729 and Mermaid, respectively, in 1987–1988. In 1988–1989, both lines 85-765 and Mermaid produced greater oil yields than line 85-729. Line 85-765 produced a 7% greater seed weight and Mermaid produced 55% more seeds per flower than line 85-729 (P < 0.05). Oil yields of lines 85-765 and Mermaid were not significantly different in 1988–1989. Seed weight of line 85-765 was 9% greater than Mermaid in 1988–1989, but Mermaid produced 31% more seeds per flower than line 85-765 (P < 0.05). Seed weight differences were apparently due to variation in seed growth rate and not seed growth duration. Differences in seeds per flower were not related to pollinator activity or flower phenology. Both seed weight and seed number per flower were important yield components for determining the relative oil-yield performance of lines 85-765, 85-729, and Mermaid.
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