Transcriptomic profiling of mature embryo from an elite super-hybrid rice LYP9 and its parental lines

DNA fingerprinting and genetic diversity of four Bangladesh Rice Research Institute (BRRI) hybrid varieties and their parental lines were carried out. A total of 73 microsatellite markers were tested for screening the genotypes. Among the 73 amplified products, 37% had polymorphic bands showing 81 alleles. The number of alleles per locus ranged from two (RM10) to eight (RM327), where average allele number was 4.333. The Polymorphism Information Contents (PIC) lied between 0.337 (RM10) and 0.852 (RM327). RM327 was the most robust marker providing the highest PIC value (0.852). Pair-wise genetic dissimilarity coefficient interaction showed that BRRI hybrids two was the most genetically distant from each other whereas BRRI hybrids one, three, four and their respective parents were very close. Cluster analysis based on Dices similarity coefficient UPGMA system grouped BRRI hybrid and their parental lines into four major clusters at 0.41 cut off similarity coefficient. Four BRRI hybrid varieties grouped into four distinct clusters along with their component lines indicating their genetic closeness. Key words: Hybrid rice, Diversity analysis, Microsatellite markers, DNA fingerprinting D. O. I. 10.3329/ptcb.v21i2.10242 Plant Tissue Cult. & Biotech. 21(2): 189-198, 2011 (December)

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Fingerprinting of Rice Hybrids and their Parental Lines using Microsatellite Markers and their Utilization in Genetic Purity Assessment of Hybrid Rice

Research Journal of Seed Science ◽

10.3923/rjss.2009.40.47 ◽

2009 ◽

Vol 2 (3) ◽

pp. 40-47 ◽

Cited By ~ 6

Author(s):

P. Tamilkumar ◽

R. Jerlin ◽

N. Senthil ◽

K.N. Ganesan ◽

R.J. Jeevan ◽

...

Keyword(s):

Microsatellite Markers ◽

Hybrid Rice ◽

Genetic Purity ◽

Purity Assessment ◽

Parental Lines

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Different mechanisms underlying the yield advantage of ordinary hybrid and super hybrid rice over inbred rice under low and moderate N input conditions

Field Crops Research ◽

10.1016/j.fcr.2017.11.019 ◽

2018 ◽

Vol 216 ◽

pp. 150-157 ◽

Cited By ~ 9

Author(s):

Liying Huang ◽

Fan Sun ◽

Shen Yuan ◽

Shaobing Peng ◽

Fei Wang

Keyword(s):

Hybrid Rice ◽

Super Hybrid Rice ◽

N Input

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Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice

Agronomy ◽

10.3390/agronomy10020209 ◽

2020 ◽

Vol 10 (2) ◽

pp. 209

Author(s):

Yonghui Pan ◽

Shuai Gao ◽

Kailiu Xie ◽

Zhifeng Lu ◽

Xusheng Meng ◽

...

Keyword(s):

Grain Yield ◽

Hybrid Rice ◽

Rice Cultivar ◽

Radiation Use Efficiency ◽

Above Ground Biomass ◽

Radiation Interception ◽

Super Hybrid Rice ◽

Use Efficiency ◽

Fertilizer Rates ◽

Radiation Use

To reveal the physiological mechanism underlying the yield advantage of super hybrid rice compared with inbred super rice, a super hybrid rice cultivar Yliangyou 3218 (YLY) and an inbred super rice cultivar Zhendao 11 (ZD) were field grown under five nitrogen (N) fertilizer rates in 2016 and 2017. The average grain yield of YLY across nitrogen fertilizer rates was 10.1 t ha−1 in 2016 and 9.7 t ha−1 in 2017, 29.6% and 21.3% higher than that of ZD in 2016 and 2017, respectively. YLY showed higher above-ground biomass accumulation, especially growth before heading, which was mainly due to its faster green leaf area index (GLAI) formation and greater maximum GLAI (GLAImax). The daily radiation interception (RIdaily) was 15.0% higher in YLY than ZD, but the accumulated radiation interception (RIacc) before heading showed little difference between them because ZD had a longer growth duration. The radiation use efficiency (RUE) of YLY before heading was 54.7% higher than that of ZD (YLY, 2.12 g MJ−1; ZD, 1.37 g MJ−1). Our result demonstrated that the yield advantage of YLY was due to its higher above-ground biomass before heading, which was mainly achieved by its improvement in RUE rather than radiation interception.

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