Publication Date
1993
Description
Poor seedling emergence is one of the major limitations in establishing sericea lespedeza (Lespedeza cuneata (Dumont de Courset) CJ. Don.). The objectives of this study were to screen 2S accessions obtained from the National Plant Germplasm System, USA, for maximum hypocotyl elongation (HE) and to determine the relationship between HE and percentage emergence. Maximum HE of each accession was determined on dark-grown seedlings 9 days after emergence in a growth chamber. Seeds of each accession were planted in the field at depths of 1 and 3 cm in 1990 and 1991. Emergence of 9 accessions (3 with long HE, 3 with medium HE, and 3 with short HB} were further compared in a greenhouse study. Significant differences for HE were found among the 2S accessions. HE was significantly correlated with percentage field emergence at 1 cm (r = 0.706) and at 3 cm (r = 0.4S3) in 1990. Similar resulls were found in the 1991 field test and in the greenhouse study. We concluded that screening sericea lespedeza accessing or HE is effective in determining ability to emerge.
Citation
Qiu, J and Mosjidis, J A., "Screening Lespedeza cuneata accessions for Hypocotyl Elongation" (2024). IGC Proceedings (1993-2023). 36.
https://uknowledge.uky.edu/igc/1993/session12/36
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Screening Lespedeza cuneata accessions for Hypocotyl Elongation
Poor seedling emergence is one of the major limitations in establishing sericea lespedeza (Lespedeza cuneata (Dumont de Courset) CJ. Don.). The objectives of this study were to screen 2S accessions obtained from the National Plant Germplasm System, USA, for maximum hypocotyl elongation (HE) and to determine the relationship between HE and percentage emergence. Maximum HE of each accession was determined on dark-grown seedlings 9 days after emergence in a growth chamber. Seeds of each accession were planted in the field at depths of 1 and 3 cm in 1990 and 1991. Emergence of 9 accessions (3 with long HE, 3 with medium HE, and 3 with short HB} were further compared in a greenhouse study. Significant differences for HE were found among the 2S accessions. HE was significantly correlated with percentage field emergence at 1 cm (r = 0.706) and at 3 cm (r = 0.4S3) in 1990. Similar resulls were found in the 1991 field test and in the greenhouse study. We concluded that screening sericea lespedeza accessing or HE is effective in determining ability to emerge.
