Development of High-yielding Rice Lines and Analysis of Panicle and Yield-related Traits Using Doubled Haploid Lines Derived from the Cross between Deuraechan and Boramchan, High-yielding japonica Rice Cultivars in Korea

Park, Hyun-Su; KiYong, Ha; Kim, Ki‐Young; Kim, Woojae; JeongKwon, Nam; Baek, Man‐Kee; Kim, Jeong-Ju; Jeong, Jong‐Min; Cho, Young‐Chan; Lee, Jeom-Ho; Kim, Bo-Kyeong; Ahn, Sang-Nag

doi:10.9787/kjbs.2015.47.4.384

Cited by 6 publications

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“…또한, 현재까지 발표된 변이는 표준 품종으로 자포니 카인 Nipponbare를 기준으로 하였으나 IRRI의 생물정보팀에 서는 Kasalath, IR64, DJ123 등 추가로 전장게놈에 대하여 유전 변이지도를 작성함으로써 유전적 변이를 발굴하고 있다 (Sakai et al 2014;Schatz et al 2014;Alexandrov et al 2015). 벼의 수량은 식물체의 광합성에 의해 동화산물이 생성되 고 전류되는데 관여하는 능력인 source와 종실에 축적될 수 있는 잠재력인 sink의 상호작용으로서, 전 생육과정을 통해 이루어지는 건물생산과 그 분배과정의 최종적인 결과라고 할 수 있다 (Park et al 2015). 벼의 주요 기관을 통하여 수량과 관련한 다양한 유전자 및 QTL이 보고되었다.…”

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Gene expression and SNP identification related to leaf angle traits using a genome-wide association study in rice (Oryza sativaL.)

Kim

Kang

et al. 2018

J Plant Biotechnol

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This study was conducted to investigate a morphological trait in 294 rice accessions including Korean breeding lines. We also carried out a genome-wide association study (GWAS) to detect significant single nucleotide polymorphism markers and candidate genes affecting major agronomic traits. A Manhattan plot analysis of GWAS using morphological traits showed that phenotypic and statistical significance was associated with a chromosome in each group. The significance of SNPs that were detected in this study was investigated by comparing them with those found previously studied QTL regions related to agronomic traits. As a result, SNP (S8-19815442), which is significant with regard to leaf angle, was located in the known QTL regions. To observe gene mutations related to leaf angle in a candidate gene, Os08g31950, its sequences were compared with sequences in previously selected rice varieties. In Os08g31950, a single nucleotide mutation occurred in one region. To compare relative RNA expression levels of candidate gene Os08g31950, obtained from GWAS analysis of 294 rice accessions and related to lateral leaf angle, we investigated relative levels by selecting 10 erect leaf angle varieties and 10 horizontal leaf angle varieties and examining real-time PCR. In Os08g31950, a high level of expression and various expression patterns were observed in all tissues. Also, Os08g31950 showed higher expression levels in the erect leaf angle variety group and higher expression rates in the leaf than in the root. The candidate gene detected through GWAS would be useful in developing new rice varieties with improved yield potential through future molecular breeding.GWAS 분석을 이용한 벼 지엽각 관련 SNP 동정 및 발현 분석 김미선 ･ 유의수 ･ 강권규 ･ 조용구 Gene expression and SNP identification related to leaf angle traits using a genome-wide association study in rice (Oryza sativa L.)

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Gene expression and SNP identification related to leaf angle traits using a genome-wide association study in rice (Oryza sativaL.)

Kim

Kang

et al. 2018

J Plant Biotechnol

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Development and Characterization of Rice Lines with Clustered Spikelets and Dense Panicles

Park¹,

Baek²,

Kim³

et al. 2018

Korean J. Breed. Sci.

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Rice panicle architecture is an important factor affecting yield potential. Korean rice cultivars have a narrow genetic background for panicle architecture. To enhance the yield potential of Korean rice cultivars, we developed and characterized rice lines with new panicle architecture. Rice with improved panicle architecture has clustered spikelets and dense panicles (CD type). CD rice was derived from a cross between "Binhae Col.#1" carrying dense panicles, and "ARC10319" that has the clustered spikelets gene (Cl). CD rice lines had short and semi-erect panicles with two to five high density spikelets clustered at the tips of primary and secondary rachis branches. CD rice lines had dramatically increased numbers of spikelets; almost twice as many as those of Korean rice cultivars. The increase in spikelet number was mainly caused by the increased spikelets and branches on secondary rachises compared to those on primary rachises. The increase in spikelet number was expected to enhance the yield of CD rice by expanding sink capacity. However, the yield of selected lines; CD9, CD27, CD34, and CD39, did not reach the level of the Korean high-yielding cultivars "Boramchan" and "Hanareum2," due to the reduction in panicle number and grain weight, and poor ripening. Although no substantial yield increase was observed in CD rice, the panicle architecture of CD rice, clustered spikelets, and dense panicles could be new genetic resources as breeding material for diversifying panicle architecture and enhancing yield potential.

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Characterization of Yield and Panicle-related Traits of Early Maturing Rice Varieties by Cultivation Times in the Honam Plain Area of Korea

Park¹,

Suh²,

Baek³

et al. 2020

Korean J. Breed. Sci.

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The cultivation of early maturing rice in the Honam plain area of Korea is increasing to diversify the cropping systems. The cropping systems of this rice are usually classified as early, ordinary, and late cultivations based on transplanting time. The characteristics of varieties vary depending on the cultivations. To evaluate the performance of varieties and interpret the relationships between genotype and environment, nine yield and 17 panicle-related traits of six early maturing rice varieties (Jopyeong, Odae, Unkwang, Haedamssal, Jinkwang, and Haedeul) were characterized on early, ordinary, and late cultivations. Heading date was longer in order of early, ordinary, and late cultivations. The cumulative mean temperature of growth stage was similar for all cultivations. The variation in the number of spikelets per panicle (NS) was mainly due to the variety and the traits related with secondary rachis-branch were affected more by variety than the traits related to primary rachis-branch. The varieties with the highest yield were Haedamssal on early maturing cultivation and Unkwang on ordinary and late cultivations. Haedamssal displayed a panicle-number type plant architecture with relatively higher number of panicles per hill (PN) and average NS. Unkwang exhibited panicle-weight type with many NS and less PN. Additive main effects and multiplicative interaction analysis revealed that, NS and HD were mostly affected by genotype and environment, respectively. Among yield-related traits, NS contributed the most to enhanced yield of varieties in all cultivations. NS could be the target trait of breeding programs intended to improve the yield potential of early maturing rice adaptable to the Honam plain area. However, proper PN should be considered because PN, which was negatively correlated with NS, also affected the yield.

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Development of High-yielding Rice Lines and Analysis of Panicle and Yield-related Traits Using Doubled Haploid Lines Derived from the Cross between Deuraechan and Boramchan, High-yielding japonica Rice Cultivars in Korea

Cited by 6 publications

References 0 publications

Gene expression and SNP identification related to leaf angle traits using a genome-wide association study in rice (Oryza sativaL.)

Gene expression and SNP identification related to leaf angle traits using a genome-wide association study in rice (Oryza sativaL.)

Development and Characterization of Rice Lines with Clustered Spikelets and Dense Panicles

Characterization of Yield and Panicle-related Traits of Early Maturing Rice Varieties by Cultivation Times in the Honam Plain Area of Korea

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