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Research code: شماره مصوب:92231-020508-63-03
Sugar Beet Seed Institute, Agricultural Research, Education and Extension Organization (AREEO) , mr.mirzaei@areeo.ac.ir
Abstract: (776 Views)
Extended abstract
Introduction: One of the most important factors in achieving optimal root yield of sugar beet at the time of harvest is proper plant density due to the high field emergence and subsequent seedling growth through the use quality seeds. Of the determining traits the vigor and quality of sugar beet seeds are different seedling traits.
Materials and Methods: For this purpose, the germination vigor and seedling growth rate in laboratory conditions by measuring the traits of maximum germination, hypocotyl length, radicle length, fresh and dry weight of seedling in 10 single cross hybrids along with the male parent produced in three locations was used. Also, the correlation of the mentioned traits with seedling emergence traits in the greenhouse and the chemical traits of sugar beet seed was studied.
Results: The results showed that seedling traits, which are represents trait of the seed vigor, are determined by two factors, seed production environment and genetics. The correlation coefficients between seedling traits in the laboratory with seedling emergence traits in the greenhouse and seed electrical conductivity showed that genotypes with low electrical conductivity and percentage of soluble solids on the pericarp of sugar beet seeds, germinated faster in greenhouse conditions and mean emergence time was decreased. Therefore, high level of electrical conductivity of sugar beet seed pericarp was associated with low seed vigor.Also, significant correlation was observed seedling emergence rate and mean seedling emergence time in greenhouse with hypocotyl length in the laboratory positive (+0.91**) and negative (-0.82**), respectively. It can be concluded that the genotypes with longer hypocotyl length in the laboratory resulted in faster seedling emergence rate in the greenhouse. Subsequently, single crosses such as MS KWS * OT 231 with greater root length (8.49 cm), seedling length (14.66 cm), and the ratio root length to hypocotyl (1.37) in laboratory conditions, increased the mean dry weight of shoot (1.89 mg) and SVI (8.26) in the greenhouse compared to the single crosses others were accompanied.
Conclusions: Therefore, it seems that seedling traits and the chemical characteristics of sugar beet seeds to predict the emergence of seedlings in greenhouse and perhaps in the field are recommended. However, in order to accurate validation and evaluation, it is recommended that the aforementioned experiment be conducted under field conditions.
Highlights:
Introduction: One of the most important factors in achieving optimal root yield of sugar beet at the time of harvest is proper plant density due to the high field emergence and subsequent seedling growth through the use quality seeds. Of the determining traits the vigor and quality of sugar beet seeds are different seedling traits.
Materials and Methods: For this purpose, the germination vigor and seedling growth rate in laboratory conditions by measuring the traits of maximum germination, hypocotyl length, radicle length, fresh and dry weight of seedling in 10 single cross hybrids along with the male parent produced in three locations was used. Also, the correlation of the mentioned traits with seedling emergence traits in the greenhouse and the chemical traits of sugar beet seed was studied.
Results: The results showed that seedling traits, which are represents trait of the seed vigor, are determined by two factors, seed production environment and genetics. The correlation coefficients between seedling traits in the laboratory with seedling emergence traits in the greenhouse and seed electrical conductivity showed that genotypes with low electrical conductivity and percentage of soluble solids on the pericarp of sugar beet seeds, germinated faster in greenhouse conditions and mean emergence time was decreased. Therefore, high level of electrical conductivity of sugar beet seed pericarp was associated with low seed vigor.Also, significant correlation was observed seedling emergence rate and mean seedling emergence time in greenhouse with hypocotyl length in the laboratory positive (+0.91**) and negative (-0.82**), respectively. It can be concluded that the genotypes with longer hypocotyl length in the laboratory resulted in faster seedling emergence rate in the greenhouse. Subsequently, single crosses such as MS KWS * OT 231 with greater root length (8.49 cm), seedling length (14.66 cm), and the ratio root length to hypocotyl (1.37) in laboratory conditions, increased the mean dry weight of shoot (1.89 mg) and SVI (8.26) in the greenhouse compared to the single crosses others were accompanied.
Conclusions: Therefore, it seems that seedling traits and the chemical characteristics of sugar beet seeds to predict the emergence of seedlings in greenhouse and perhaps in the field are recommended. However, in order to accurate validation and evaluation, it is recommended that the aforementioned experiment be conducted under field conditions.
Highlights:
- There were differences between the genotypes in terms of seed characteristics and the maternal environment in which the seeds were grown.
- Poor vigor and seed performance can reduce the percentage of seedling emergence potential as well as the rate and uniformity of seedling emergence compared to high vigor seeds.
- Seedling traits in sugar beet are traits of the seed vigor that are influenced by the sugar beet seed production environment and genetics.
Type of Study: Research |
Subject:
General
Received: 2024/10/21 | Revised: 2025/05/31 | Accepted: 2025/01/21
Received: 2024/10/21 | Revised: 2025/05/31 | Accepted: 2025/01/21
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