Single Cross Maize Hybrid ‘Hwangdaok’ for High Grain Yield

Son, Beom-Young; Baek, Seong-Bum; Kim, Jung‐Tae; Lee, Jin-Seok; Bae, Hwan-Hee; Go, Young-Sam; Kim, Sun-Lim

doi:10.9787/kjbs.2019.51.2.105

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…Four corn (Zea mays) cultivars, Sinhwangok, Kwangpyeongok, Hwangdaok, and Jangdaok, were used in this study. These dent corns were developed by the Rural Development Administration and are major F1 hybrid cultivars for grain production in South Korea [22,23]. Seeds were sown in the National Institute of Crop Science experimental field (37°16′19.2"N 126°59′34.3"E, Suwon, Republic of Korea) on April 21, 2020 and sampled at 0, 30, and 60 days after pollination (DAP).…”

Section: Plant Materialsmentioning

confidence: 99%

High phytosterol levels in corn cobs point to their sustainable use as a nutritional source

Bae

et al. 2022

Appl Biol Chem

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Phytosterols are important structural components of plant cells that affect membrane fluidity, permeability, and membrane-related metabolic regulation. These compounds, which are abundant in vegetable oils and corn kernel oil, are also beneficial for human health. Cultivation of corn (Zea mays L.) produces huge amounts of cobs as a by-product, but efforts to utilize cobs are still limited. Here, we investigated phytosterol, crude oil, and fatty acid contents in the kernels and cobs of four major corn cultivars in South Korea and explored the potential use of cobs as a source of phytosterols. Total phytosterol levels were two times higher in cobs (68.0–217.1 mg 100 g−1 DW) than in kernels (43.8–89.5 mg 100 g−1 DW) and were highest in the kernels and cobs of Sinhwangok at 60 days after pollination. We showed that not only kernels but also cobs can be a rich source of phytosterols. The results also revealed that the amount of phytosterol is depending on a genetic background as well as developmental stages suggesting further investigation would enhance the utilization of corn cobs as a phytosterol source.

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Section: Plant Materialsmentioning

confidence: 99%

High phytosterol levels in corn cobs point to their sustainable use as a nutritional source

Bae

et al. 2022

Appl Biol Chem

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“…Eight Korean elite inbred lines, 16 Vietnamese elite lines, 10 CIMMYT lines (CMLs), and 11 F 1 hybrids (including two hybrids between Korean inbred lines and nine hybrids between KS140 and CMLs) were used for analysis. The two hybrids between Korean inbred lines Shinwangok and Hwandaok are cultivars developed by the National Institute of Crop Science, Korea [14,15]. All kernel samples were harvested from corn grown in the field at the NICS, Suwon, Korea (37°15′47″N, 126°59′16″E) in 2019 with field preparation performed as previously described [16].…”

Section: Plant Materialsmentioning

confidence: 99%

Measuring antioxidant activity in yellow corn (Zea mays L.) inbreds from three different geographic regions

Bae¹,

Go³

et al. 2021

Appl Biol Chem

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Corn (Zea mays L.) provides a major source of calories for human consumption and therefore, the nutritional components of corn have a large impact on human health. For example, corn kernels contain antioxidants, such as polyphenols (including anthocyanins and other flavonoids) and carotenoids. Such compounds represent useful targets for biofortification breeding. In this study, we used 34 corn inbred lines from three different regions (East Asia, Southern Asia, and subtropical regions) and 11 F1 hybrids derived from the inbreds to investigate antioxidant activity in yellow corn. We compared different methods for measuring antioxidant activity to test their consistency and to determine whether color could be used as an indicator of antioxidant activity. We also measured carotenoid levels in yellow corn. No difference in antioxidant activity was detected between inbred corn lines from temperate vs. tropical regions. We determined that carotenoid is a major contributor to antioxidant activity in yellow corn and that kernel color, especially yellowness, could be used as an indicator of antioxidant activity in yellow corn. These findings lay the foundation for the biofortification of yellow corn by providing information about the correlations among kernel color, carotenoid contents, and antioxidant activity and by identifying an easy method to assess antioxidant activity in yellow corn.

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Changes and Prospects in the Development of Corn Varieties in Korea

Baek

Son

Kim

et al. 2020

Korean J. Breed. Sci.

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In Korea, native or open pollinated corn varieties that were not improved before 1960 were cultivated. The 1960s was a step that created the foundation for the development of varieties. In 1962, systematic corn breeding was started when the synthetic type 'Hwangok 2' was distributed to farmers. The 1970s was the era of the change from synthetic varieties to hybrid ones, with a focus on the development of single-cross hybrids among the corn hybrids. The single-cross corn hybrid, 'Suwon 19', was an epoch-marking variety that had a unit-yield closer to that of advanced countries. The 1980s was a time when the breeding direction was changed from grain corn to silage because the corn cultivation area for silage increased rapidly with the government's livestock promotion policy, and the corn seed supply system of single-cross hybrids was established. In the 1990s, the era of globalization and the launching of imports of agricultural products, the living standards of consumers became more advanced, and the development system of corn varieties was established for various use purposes. As we entered the 2000s, it started the heyday of developing corn varieties, with 29 corn varieties of various use purposes and excellent cultivation stability developed. In the 2010s, the scope of corn variety development expanded from government or universities to private seed companies. Thus, the corn varieties in Korea have changed and developed in response to the situation of the times, and there are currently 110 corn varieties registered with Korea Seed & Variety Service (KSVS). In the future, vegetable corn is expected to be continuously developed, with functional ingredients such as strengthening vitamins, trace elements, and antioxidant components. Specialized grain corn, such as lysine and maltodextrin, will be developed and commercialized in order to improve the value added. In the case of silage corn, there will be varieties of early maturing and late planting adaptability, with no more than 110 days until maturity, suitable for the cropping system, such as second cropping and double cropping, as well as high digestion rate and nutrition varieties with high feed value, and excessive water tolerance corn varieties that adapt well to paddy fields. Furthermore, it is expected that corn varieties that adapt well to Southeast Asia, Latin America, and Africa will continue to be developed and supplied.

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Single Cross Maize Hybrid ‘Hwangdaok’ for High Grain Yield

Cited by 3 publications

References 3 publications

High phytosterol levels in corn cobs point to their sustainable use as a nutritional source

High phytosterol levels in corn cobs point to their sustainable use as a nutritional source

Measuring antioxidant activity in yellow corn (Zea mays L.) inbreds from three different geographic regions

Changes and Prospects in the Development of Corn Varieties in Korea

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