Stigma exsertion rate

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WebJul 9, 2024 · Stigma exsertion rate (SER) is a key determinant of outcrossing in hybrid rice seed production. A quantitative trait locus (QTL) for stigma exsertion rate in rice, qSER-7, has previously been detected on chromosome 7 by using a F 2 population derived from two indica cytoplasmic male sterility (CMS) maintainers, Huhan 1B and II-32B. Results WebApr 7, 2024 · After closure of the glumes, the average seed setting rate of rice spikelets with exerted stigmas was 64%, which was much higher than that of the spikelets with non-exerted stigmas (15.7%) (Tian et al. 1990 ).

Reconstruction of the High Stigma Exsertion Rate Trait in …

WebJul 9, 2024 · Background: Stigma exsertion rate (SER) is a key determinant of outcrossing in hybrid rice seed production. A quantitative trait locus (QTL) for stigma exsertion rate in rice, qSER-7, has previously been detected on chromosome 7 by using a F 2 population derived from two indica cytoplasmic male sterility (CMS) maintainers, Huhan 1B and II-32B. WebJan 31, 2024 · Stigma exsertion rate (SER) is an index of outcrossing ability in rice and is a key trait of male sterile lines (MSLs) in hybrid rice. In this study, it was found that the maintainer lines carrying gs3 and gs3 / gw8 showed higher SER. nature cooling

Genetic mapping of quantitative trait loci for the stigma exsertion ...

WebJun 7, 2024 · Stigma exsertion rate (SER) is a trait related to outcrossing ability. Reconstruction of the high-SER trait is essential in the MSL breeding of rice. In previous … WebJan 19, 2024 · Stigma exsertion, a key determinant of the rice mating system, greatly contributes to the application of heterosis in rice. As few QTLs have been fine mapped or cloned, the genetic architecture... WebJul 18, 2024 · The NIL ( qSE4DaS )-1 had increased exsertion rates of 22.14, 32.35, and 54.49% for single stigma exsertion rate (SSE), dual stigma exsertion rate (DSE), and total … nature cooking

Urban Dictionary: stigma

WebNov 23, 2024 · Stigma exsertion, a plant trait in which stigmas emerge from flower buds before anthesis and can accept pollen without the risk of self-pollination, since the flowers’ own stamens are still contained in the buds (Takano-Kai et al. 2011 ), is critical for improving the efficiency of hybrid seed production. WebSep 21, 2024 · In hybrid rice seed production, cytoplasmic male-sterile rice lines with a high percentage of stigma exsertion are preferred to increase seed production by increasing the outcrossing rate due to the superiority of pollen receptivity … marine floor hatch trimWebApr 3, 2024 · Stigma exsertion is one of the most important outcrossing (allogamous) traits found in flowering plants. Wild rice, O. rufipogon, had an average stigma exsertion rate of 81.5%, whereas in cultivated rice it was 13.3% (Supplemental Tables 1 and 5). This implies that more enforced selfing came with domestication. nature cook raketenofen

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Stigma exsertion rate

Weblower stigma exsertion rate compared to wild rice (Virmani Sant, 1994). Stigma exsertion percentage of At307 was not significantly higher from other varieties (Table 1). Al-though At306 and Bg304 have showed higher stigma exsertion percentage, they were not re-ported out-crossing problem. condition. WebApr 3, 2024 · Stigma exsertion, a key determinant of the rice mating system, greatly contributes to the application of heterosis in rice. Although a few quantitative trait loci associated with stigma exsertion have been fine mapped or cloned, the underlying genetic architecture remains unclear.

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WebThe stigma exposure rate is the number of stigma-exposed glumes/the number of all glumes in a single inflorescence x 100%. Each experiment was repeated 5 times. Significant difference... WebJan 1, 2024 · Stigma exsertion rate (SER) of male sterile lines (MSLs) is a key factor affecting F 1-seed production in hybrid rice. In this study, seven QTLs for SER were …

WebJun 12, 2024 · The major alleles promoted stigma exsertion at qDSE5, qTSE3.1, qTSE3.2, qTSE6.2, qTSE8.3, and qTSE12, with the allelic effects ranging from 3.8% to 5.6%. The … WebJun 1, 2024 · Stigma exsertion rate (SER) is a trait related to outcrossing ability. Reconstruction of the high-SER trait is essential in the MSL breeding of rice.

WebAug 24, 2024 · Tan et al. reconstructed the high-SER (stigma exsertion rate) trait based upon 18 quantitative trait loci (QTLs) for SER from O. sativa, O. glaberrima, and O. glumaepatula using single-segment substitution lines (SSSLs) in the genetic background of Huajingxian 74 (HJX74). A total of 29 pyramiding lines with 2-6 QTLs were developed … WebJun 1, 2015 · About 6% of the lines (97 out of 1,770) were selected from the 2014 floral screening and tested for repeatability in 2015. The 97 lines iii were grown in two replicates, and out of 97 lines, 17 (18%) were selected for hybrid wheat crossing. Heterosis in TAM F 2 populations College Station F 2 (CF 2) and Amarillo F 2 (AF 2

WebJun 9, 2024 · Stigma exsertion rate (SER) is a key determinant for the outcrossing ability of male sterility lines (MSLs) in hybrid rice seed production. In the process of …

WebSep 16, 2024 · Especially, seed setting rate is highly influenced by stigma exsertion in male sterile plants (Parmar et al. 1980; Hoff and De La Torre 1981) and long stigma is regarded as the major factor for high stigma exsertion (Parmar et al. 1980). marine flooring mats sheetWebDissection of closely linked QTLs controlling stigma exsertion rate in rice by substitution mapping doi: 10.1007/s00122-021-03771-9. Authors Quanya Tan 1 , Chengshu Wang 1 , Xin Luan 1 , Lingjie Zheng 1 , Yuerong Ni 1 , Weifeng Yang 1 , Zifeng Yang 1 , Haitao Zhu 1 , Ruizhen Zeng 1 , Guifu Liu 1 , Shaokui Wang 2 , Guiquan Zhang 3 Affiliations marine flooring flexa collectionWebJan 1, 2014 · There were one to five pairs of epistatic QTLs affected stigma exertion. The contribution rate of additive and epistatic effects were in a low magnitude for most cases (0.83%-13.77%) while one... marine floor mats for boatsWebNov 1, 2024 · The stigma exsertion rate was calculated as follows: (4)Stigma exsertion rate (%) = number of florets with exserted stigma / total number of observed florets × 100 2.3.4. Determination of pollen grain number per stigma and … marine floor plan financingWebJul 1, 2024 · The phenotypic variance explained by each QTL for the stigma exsertion rate ranged from 12.26 to 25.44%. For the SSE rate, three QTLs, qSSE5, qSSE10 and qSSE11, … marine flooring newport news vaWebDec 12, 2024 · A total of 15 QTLs were identified for total stigma exsertion rate (TSE) which includes single and dual stigma exsertion distributed on chrm 2, 3, 4, 5, 6, 8, 11 and 12 through QTL mapping.... naturecool 1000WebDetection of dominant QTLs for stigma exsertion ratio in rice derived from Oryza rufipogon accession ‘W0120’ ... A QTL associated with high seed coat cracking rate of a leading Japanese soybean variety. nature copy and paste emoji