Natural Variation of Leaf Thickness and Its Association to Yield Traits in indica Rice

Liu, Chuan-guang; Zhou, Xinqiao; Chen, Dagang; Li, Lijun; Li, Ju-chang; You-ding, Chen

doi:10.1016/s2095-3119(13)60498-0

Cited by 26 publications

(27 citation statements)

References 14 publications

(28 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Field experiments were carried out at the test station of the Rice Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, in the late-cropping seasons in 2008-2009. The field trials design and field management were conducted according to the methods described by Liu et al (2014). Five to seven days after full heading, 10 plants with uniform growth were sampled from each plot to determine the thickness of the flag leaf blade on the main stem.…”

Section: Plant Materials and Phenotypingmentioning

confidence: 99%

“…Five to seven days after full heading, 10 plants with uniform growth were sampled from each plot to determine the thickness of the flag leaf blade on the main stem. The measurement the protocol as described by Liu et al (2014) was used for measuring the thickness of the flag leaf. To avoid interference from leaf water status, the field was kept flooded while measuring of flag leaf thickness.…”

Section: Plant Materials and Phenotypingmentioning

confidence: 99%

“…The relationship between leaf thickness and grain yield and yield traits in indica rice had been analyzed by Chen et al (2011) and Liu et al (2014). The studies revealed a tight correlation between leaf thickness and panicle traits.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Association mapping for flag leaf thickness in an indica rice population from South China

Liu¹,

Chen²,

Zhou³

et al. 2019

Afr. J. Agric. Res.

View full text Add to dashboard Cite

Flag leaf is the most important source of photosynthate for developing rice grains, and flag leaf thickness is an important morphological trait in rice plant-type breeding programs. In the present study, we carried out association mapping for flag leaf thickness in a local rice population which consisted of 86 cultivars derived from breeding programs and planted in large areas in South China. Phenotyping was conducted in the field using nondestructive leaf thickness measurements. Two hundred and thirtysix SSR markers covering 12 chromosomes were employed to genotype the accessions. The association analysis was carried out using a unified mixed-model approach. The Q+K model was selected for investigating marker-trait associations. A total of eleven marker-trait pairs with significant marker-trait associations were identified which were distributed on eight chromosomes. Four of these loci had already been identified as related to flag leaf thickness in previous studies, while the other seven were novel QTLs. The locus PSM163 had the highest r 2 -marker value of the seven novel loci, explaining 21.54 and 18.49% of the phenotypic variation in 2008 and 2009, respectively. Three of four QTLs, which were detected in a F 2 mapping population in the validation study, could correspond to a significant locus in AM, respectively. The six alleles which had the highest phenotypic values at their respective loci should be considered as favored alleles in breeding programs. Pyramiding the favored alleles for flag leaf thickness identified in the study might be a valuable approach to construct an ideal plant architecture in rice breeding.

show abstract

Section: Plant Materials and Phenotypingmentioning

confidence: 99%

Section: Plant Materials and Phenotypingmentioning

confidence: 99%

See 1 more Smart Citation

Association mapping for flag leaf thickness in an indica rice population from South China

Liu¹,

Chen²,

Zhou³

et al. 2019

Afr. J. Agric. Res.

View full text Add to dashboard Cite

show abstract

“…Intensitas cahaya tinggi menyebabkan sel-sel daun lebih kecil, tilakoid mengumpul, dan klorofil lebih sedikit, sehingga ukuran daun lebih kecil dan tebal (Buntoro et al, 2014). Ketebalan daun berkorelasi positif dengan panjang dan lebar daun, dan hal ini menunjukkan bahwa ketebalan daun dapat meningkatkan luas daun secara tunggal (Liu et al, 2014).…”

Section: Luas Daun Dan Bobot Daun Khasunclassified

Heterosis dan Heterobeltiosis Hasil Gabah Serta Korelasinya Terhadap Pertumbuhan Padi Hibrida

Agustiani¹,

Sujinah²,

Wibowo³

et al. 2019

JBDP

View full text Add to dashboard Cite

Heterosis in F1-hybrids is very closely related to processes during plant growth. The purpose of this study was to obtain information on some growth characters that supported positive heterosis for yield. The experiment was carried out at KP. Sukamandi on the rainy season in 2016, used a Randomized Block Design with three replications. The material used in this study were four superior hybrid varieties (Hipa 9, Hipa 18, Hipa 19, and Hipa East Java 2) and their parents (maintainer and restorer strains). The results showed that the four materials tested had positive heterosis values with an average value of 4.23-25.03% for the characters of plant height, tiller number, grain number per panicle, weight of 1000 grains, and yield. Heterobeltiosis values ranged from 2.06% to 13.62% for the characters of plant height, tiller number, grain number per panicle, and yield. Growth characters that were positively correlated to yield increase were plant height, leaf area in the primordia phase, and weight of 1000 grains. The four hybrid materials tested had similar leaf area per clump in the primordia phase, but only Hipa Jatim 2 still had the highest leaf area in the physiological cooking phase. All four hybrids had better leaf thickness characteristics than their parents. F1 average showed increased number of grain per panicle compared to the two parents, especially in Hipa 18 and Hipa 19, which had a higher weight per 1000 grains than the two parents. ABSTRAKHeterosis pada F1-hibrida sangat berkaitan erat dengan proses-proses selama pertumbuhan tanaman. Tujuan penelitian ini adalah untuk mendapatkaninformasibeberapa karakter pertumbuhan yang mendukung heterosis positif terhadap hasil. Percobaan dilaksanakan di KP. Sukamandi pada musim hujan 2016, menggunakan Rancangan Acak Kelompok dengan tiga ulangan. Materi yang digunakan dalam penelitian ini adalah empat varietas unggul hibrida (Hipa 9, Hipa 18, Hipa 19, dan Hipa Jatim 2) dan tetuanya (galur maintainer dan restorer). Hasil penelitian menunjukkan bahwa keempat materi yang diuji mempunyai nilai heterosis positif dengan nilai rata-rata 4,23-25,03% pada karakter tinggi tanaman, jumlah anakan, jumlah gabah per malai, bobot 1000 butir, dan hasil. Nilai heterobeltiosis berkisar antara 2,06% sampai 13,62% pada karakter tinggi tanaman, jumlah anakan, jumlah gabah per malai, dan hasil. Karakter-karakter pertumbuhan yang berkorelasi positif terhadap peningkatan hasil yaitu tinggi tanaman, luas daun pada fase primordia, dan bobot 1000 butir. Keempat materi hibrida yang diuji mempunyai luas daun per rumpun yang setara pada fase primordia, namun hanya Hipa Jatim 2 yang masih mempunyai luas daun tertinggi pada fase masak fisiologis,. Keempatnya mempunyai karakter ketebalan daun yang lebih baik dibanding tetuanya. Rata-rata F1 menunjukkan perbaikan jumlah gabah per malai dibanding kedua tetuanya, terlebih pada Hipa 18 dan Hipa 19 yang juga mempunyai bobot 1000 butir lebih tinggi dibandingkan kedua tetuanya.

show abstract

“…Sink function is mainly associated with panicle traits, such as spike number and grain filling ability. Many studies have reported that chlorophyll content and flag leaf size are positively correlated with grain yield under natural field conditions (Jiang et al 2012;Zhang et al 2014;Liu et al 2014). One study showed that the fast decline of total chlorophyll content, photosynthetic rate, and transpiration rate of the flag leaf in the late growth period led to a decrease of the seed setting rate, which greatly influences grain yield potential (Fu et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Mapping of QTLs for source and sink associated traits under elevated CO2 in rice (Oryza sativa L.)

Dai

Zou

et al. 2019

Plant Growth Regul

View full text Add to dashboard Cite

Rice source-and sink-associated traits are important for grain yield and are sensitive to environmental conditions. The continuing increase of CO 2 concentrations in the atmosphere will become a major challenge for rice growth and development in the future due to changes in our climate such as extremes in temperature. To guarantee food safety, novel genetic loci need to be identified for source-and sink-associated traits that are specifically expressed under elevated CO 2 conditions. Eighty chromosome segment substitution lines carrying japonica (Nipponbare) chromosome segments in the indica (9311) background were used in this study. QTL analysis was conducted for source-and sink-related traits, including flag leaf length, flag leaf width, flag leaf fresh weight, flag leaf dry weight, primary branch number, secondary branch number, grain number per panicle, panicle weight per plant, chlorophyll a, chlorophyll b, and carotenoid contents, under ambient CO 2 concentrations and free-air CO 2 enrichment. A total of 49 QTLs for these traits were detected on chromosomes 1, 3, 5, 6, 7, 9, and 12 under the two conditions; the variance explained by these QTLs varied from 6.22 to 38.15%. Among these QTLs, 19 of them were detected under the natural field conditions and 30 were detected in the elevated CO 2 conditions. In addition, 2 and 13 QTLs were specifically expressed in the natural and CO 2-enriched conditions, respectively. Our findings have important implications on the utilization of germplasm resources for ensuring food security under elevated CO 2 levels, especially for QTLs that were specifically detected under the elevated CO 2 condition. Keywords CO 2 concentration • Chromosome segment substitution line • QTL • Rice Li-Ping Dai and Xue-Li Lu contributed equally to the article.

show abstract

Natural Variation of Leaf Thickness and Its Association to Yield Traits in indica Rice

Cited by 26 publications

References 14 publications

Association mapping for flag leaf thickness in an indica rice population from South China

Association mapping for flag leaf thickness in an indica rice population from South China

Heterosis dan Heterobeltiosis Hasil Gabah Serta Korelasinya Terhadap Pertumbuhan Padi Hibrida

Mapping of QTLs for source and sink associated traits under elevated CO2 in rice (Oryza sativa L.)

Contact Info

Product

Resources

About