Days to Heading and Culm Length Variation of Korean Rice Varieties in Different Environments

Lee, Chang-Min; Kwon, Young Ho; Park, Hyang-Mi; Jeung, Ji-Ung; Park, Hyun-Su; Baek, Man‐Kee; Ha, Su-Kyung; Mo, Youngjun

doi:10.9787/kjbs.2020.52.4.389

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…Early heading rice cultivars are also useful for avoiding extreme whether events due to climate change and mitigating methane emissions from rice paddies by minimizing the duration of rice cultivation [25,26]. To exploit such advantages, tremendous efforts have been made in Korean rice breeding programs to develop a number of early heading rice cultivars [19,20]. However, the gene mechanisms underlying heading date variation of Korean rice cultivars are unclear.…”

Section: Discussionmentioning

confidence: 99%

“…In South Korea, rice cultivars are generally classified into three maturity groups according to heading dates under optimal planting conditions (sowing in early May and transplanting in early June in the southern plain area)-namely, the early maturing group heading before the end of July, the mid maturing group heading in early August, and the mid-late maturing group heading in mid-late August or later [19]. A wide variation exists in the heading dates of Korean rice cultivars, ranging from 46 to 111 days from transplanting to heading under optimal planting conditions [20,21]. However, the genetic basis underlying the heading date variation of Korean rice cultivars have been unclear.…”

Section: Introductionmentioning

confidence: 99%

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Hd1 Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars

Lee

Park

et al. 2021

Plants

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Optimizing flowering time in crop plants is critical for maximizing yield and quality under target environments. While there is a wide range of heading date variation in Korean rice cultivars, the underlying gene mechanisms are unclear. Here, we sequenced the protein coding regions of Hd1, the major rice heading date gene, from 293 Korean rice cultivars and investigated the associations between Hd1 allele types and major agronomic traits under four different environments. There were four functional Hd1 and five nonfunctional hd1 alleles distributed among the 293 Korean rice cultivars. The effects of the Hd1 allele types were highly significant for days to heading in all four environments, explaining 51.4–65.8% of the phenotypic variation. On average, cultivars carrying nonfunctional hd1 headed 13.7 days earlier than those carrying functional Hd1. While the Hd1 allele types exhibited highly significant effects on culm length and protein content under all four environments, the differences between cultivars carrying Hd1 and hd1 were minimal. The effects of the Hd1 allele types on amylose content were significant in only one of the four environments. Our results provide useful information for fine-tuning rice heading dates by utilizing different Hd1 alleles in rice breeding programs.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hd1 Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars

Lee

Park

et al. 2021

Plants

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“…Goji berry ( Lycium barbarum ), a dried fruit of the tree belonging to the Solanaceae family, is native or cultivated in Korea, China, and Taiwan and is widely used in oriental medicine ( Lee et al, 1998 ). Goji berry contains carotenoids, choline, zeaxanthin, physalin (dipalmitoylzeaxanthin), vitamin B1, β-sitosterol, betaine, rutin, and unsaturated fatty acids, such as melissic acid ( Kim et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

AGEs Blocker™ (Goji Berry, Fig, and Korean Mint Mixed Extract) Inhibits Skin Aging Caused by Streptozotocin-Induced Glycation in Hairless Mice

Yoo¹,

Lee²,

Jang³

et al. 2023

Prev. Nutr. Food Sci.

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Glycation is a cause of skin aging. This study investigated in a glycation-induced skin aging mouse model the effects on skin and mechanism of action of AGEs Blocker™ (AB), which contains goji berry, fig, and Korean mint mixed extract. This study sought to demonstrate the antiglycation effect of streptozotocin, thereby improving skin aging, by measuring advanced glycation end products (AGEs) and various skin parameters, including collagen; matrix metalloproteinases (MMPs); inflammatory cytokines; activities of oxidative enzymes; and skin wrinkles, elasticity, and hydration. This study found that skin wrinkles, elasticity, and hydration improved with AB. Particularly, the oral administration of AB suppressed AGEs, receptors of AGEs, and carboxymethyl lysine in blood and skin tissue. In addition, AB increased the activities of antioxidative enzymes, reduced inflammatory cytokines, suppressed MMP-9 expression, and increased the contents of collagen and hyaluronic acid, ultimately suppressing skin wrinkles and increasing skin elasticity and hydration. Therefore, AB can inhibit skin aging through its antiglycation effect and is thus considered a good ingredient for skin care products.

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“…However, plants possess inherent resistance mechanisms that can minimize the effects of salt stress, and this ability varies across species and within species due to genetic traits [25]. Native crop resources, cultivated in specific regions for extended periods, not only adapt well to local environmental conditions but also align with the preferences of local consumers [26,27]. Consequently, selecting salt-tolerant genotypes from native resources and utilizing them as breeding materials can facilitate the development of varieties that meet the demands of Korean growers and consumers alike.…”

Section: Introductionmentioning

confidence: 99%

Physiological Responses of Pak Choi (Brassica rapa Subsp. Chinensis) Genotypes to Salt Tolerance

Park,

Kim,

Lee

et al. 2023

Horticulturae

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Salinity stress poses a significant challenge to Pak Choi (Brassica rapa subsp. Chinensis) production. To address this limitation, we conducted an evaluation of 24 Korean native Pak Choi species to identify genotypes with resistance to salt stress. Through cluster analysis of electrolyte leakage data, we discovered ‘IT262109’, ‘IT279432’, and ‘IT185735’ as native accessions displaying the strongest salt tolerance. Additionally, our assessment of the maximum quantum yield of photosystem II revealed a 3.7% reduction in seaweed yield in the highly salt-tolerant system compared with the control group, while the weak salt-tolerant system experienced a substantial reduction rate of 45.7% to 49.4%. Notably, salt stress had a significant impact on Pak Choi growth, but the salt-tolerant genotype exhibited less growth reduction compared with the salt-sensitive genotype. Based on the electrolyte leakage and maximum quantum yield data, it was evident that ‘IT185735’ demonstrated poorer growth compared with ‘IT262109’ and ‘IT279432’. Consequently, ‘IT262109’ and ‘IT279432’ show great potential as parent varieties for enhancing salt tolerance in Pak Choi.

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Days to Heading and Culm Length Variation of Korean Rice Varieties in Different Environments

Cited by 5 publications

References 14 publications

Hd1 Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars

Hd1 Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars

AGEs Blocker™ (Goji Berry, Fig, and Korean Mint Mixed Extract) Inhibits Skin Aging Caused by Streptozotocin-Induced Glycation in Hairless Mice

Physiological Responses of Pak Choi (Brassica rapa Subsp. Chinensis) Genotypes to Salt Tolerance

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