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1. Recovery Measures and Field Management Strategies After Hailstone Damage in Upland Cotton | |||
NIE Hushuai#,SU Ying#,LI Le,DAI Maohua,WANG Dingwei,SU Beibei,XIAO Feng,HUA Jinping | |||
Agronomy 19 November 2021 | |||
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Abstract:Hailstorm might damage cotton plants severely and cause heavy economic loss in field production. It occurred often in Yellow River Basin Cotton Region and Northwest Inland Cotton Area in China. In 2015 and 2016, there were three times\' hailstorm damaged our field experiments of upland cotton (Gossypium hirsutum L.) in Hebei Province during seedling and bud periods. To reduce losses, we started the study to evaluate the damage effects of hailstone on plant architecture, and performed serials strategies to recover the plants and to rescue the experiments. Based on evaluating the hailstone damage, we fertilized 112.50 kg/ha Urea fertilizer (N content ≥ 46.4%) and intertilled the field timely. The recovery of plant individuals sprouted new buds and many new leaves after 12 DAH. Then the unnecessary shoots were pruned to adjust the development of fruit branches. Normally three new sympodia branches (NSB) in the major stem were reserved and eight subsequent emerging boll branches (EBB) in cotton plants. Five accessions with varied recovery ability and different yield potential were sampled to compare the yield and quality after hail damage. Among them, Sumian 20, 11-0710 and 11-0516 increased, while the other two accessions decreased relative to the normal production without hail damage. BC and RIL populations of upland cotton were used to evaluate the damage ratio of yield and quality, which resulted in yield loss ranged 13.45%-20.27%. Fiber length, fibre elongation, fibre uniformity, and fiber strength decreased slightly in the five accessions and two populations. These results proved that the cotton plants can compensate by proper field managements, and remedial output could be obtained after hail damage. | |||
TO cite this article:NIE Hushuai#,SU Ying#,LI Le, et al. Recovery Measures and Field Management Strategies After Hailstone Damage in Upland Cotton[OL].[19 November 2021] http://en.paper.edu.cn/en_releasepaper/content/4755796 |
2. The cytoplasmic effect on the floral morphology in upland cotton | |||
NIE Hushuai,HUA Jinping | |||
Agronomy 23 November 2020 | |||
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Abstract:The genetic incompatibilities between nucleus and cytoplasm affect various important traits, such as fertile, yield, and cause extremely complex morphological variation of floral organs. Alloplasm directly regulates the fertility of plants and may result in male sterility. A set of alloplasmic lines, which derived from 12 cytoplasm backcrossing with 3 upland cotton inbred-lines for several successive generations, were used to investigate the effects of nuclear, cytoplasm, and nuclear-cytoplasmic interaction (NCI) on the morphology of flower organ. Observational data of floral traits, include anther numbers, bud length, bud width and stigma length, were measured based on repeat experiment and the analysis of variance (ANOVA) was performed to detect the differences. The results showed that the number of cotton anther was mainly determined by cytoplasm and environment, however, not significantly affected by nucleus. The length and width of bud were determined by nucleus, cytoplasm and nucleus-cytoplasmic interaction. The length of stigma was predominantly affected by nucleus and nucleus-cytoplasmic interaction. The results help us to understand more in genetic effects of cytoplasm. | |||
TO cite this article:NIE Hushuai,HUA Jinping. The cytoplasmic effect on the floral morphology in upland cotton[OL].[23 November 2020] http://en.paper.edu.cn/en_releasepaper/content/4753090 |
3. Review: on maize grain harvest mechanization and its influencing factors | |||
Mukti Marasini,Zhang Guiping,Zhang Shunfeng,Guan Xia,Liu Yao,Zhang Fenglu | |||
Agronomy 15 July 2019 | |||
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Abstract:Mechanically harvesting is important indicator of technology transformation in agricultural production, increase farm efficiency, income and productivity and solves the contradiction between labour shortage and maize production, but often increase the grain lost, ear lost and breakage percentage due to high grain moisture content at harvest which is the key problem of harvest mechanization in maize production. This paper reviewed relationship between the grain moisture content and its relation to grain filling, agronomy character and management, genetic character and environmental factor. The effect of moisture content on these factor and provide the possible way to increase the harvest mechanization also analyzed. The result provide a basis for increase maize mechanization harvest by selecting suitable varieties with the fast dehydration rate and adopt to the environmental condition. Improvement of maize varieties should done through the breading in concern of yield and quality, lodging resistance, fast dehydration rate and low moisture content at physical maturity. | |||
TO cite this article:Mukti Marasini,Zhang Guiping,Zhang Shunfeng, et al. Review: on maize grain harvest mechanization and its influencing factors[OL].[15 July 2019] http://en.paper.edu.cn/en_releasepaper/content/4749379 |
4. Genome-wide analysis of the auxin/indoleacetic acid (Aux/IAA) gene family in allotetraploid rapeseed (Brassica napus L.) | |||
Li Haitao,Wang Jing | |||
Agronomy 04 May 2017 | |||
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Abstract:Auxin/Indoleacetic acid (Aux/IAA) genes participate in the auxin signaling pathway and play key roles in plant growth and development. Although the Aux/IAA gene family has been identified in many plants, within allotetraploid Brassica napus little is known. In this study, a total of 119 non-redundant Aux/IAA genes were found in the genome of B. napus. They were distributed non-randomly across all 19 chromosomes and other non-anchored random scaffolds, with a symmetric distribution in the A and C subgenomes. Evolutionary and comparative analysis revealed that 111 (94.1%) B. napus Aux/IAA genes were multiplied due to ancestral Brassica genome triplication and recent allotetraploidy from B. rapa and B. oleracea. Phylogenetic analysis indicated seven subgroups containing 29 orthologous gene sets and two Brassica-specific gene sets. Structures of genes and proteins varied across different genes but were conserved among homologous genes. Furthermore, analysis of transcriptional profiles revealed that the expression patterns of Aux/IAA genes in B. napus were tissue dependent. Auxin-responsive elements tend to be distributed in the proximal region of promoters, and are significantly associated with early exogenous auxin up-regulation. This comprehensive analysis provides a deeper understanding of diversification of Aux/IAA gene family and will facilitate further dissection of Aux/IAA gene function in B. napus. | |||
TO cite this article:Li Haitao,Wang Jing. Genome-wide analysis of the auxin/indoleacetic acid (Aux/IAA) gene family in allotetraploid rapeseed (Brassica napus L.)[OL].[ 4 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4732547 |
5. Sequence Variation and Functional Analysis of a FRIGIDA Orthologue (BnaA3.FRI) in Brassica napus | |||
YI Licong,WANG Jing | |||
Agronomy 28 April 2017 | |||
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Abstract: Allelic variation at the FRIGIDA (FRI) locus is a major contributor to natural variation of flowering time and vernalization requirement in Arabidopsis thaliana. Dominant FRI inhibits flowering by activating the expression of the MADS box transcriptional repressor FLOWERING LOCUS C (FLC), which represses flowering and responses to vernalization. Four FRI orthologues had been identified in the domesticated amphidiploid Brassica napus. Linkage and association studies had revealed that one of the FRI orthologues, BnaA3.FRI, contributes to flowering time variation and growth type differentiation. Haplotype analysis of the four BnaFRI copies indicated that only BnaA3.FRI was highly conserved in winter type oilseed rape. Polymorphism analysis of BnaA3.FRI using PCR markers in a panel of 174 B. napus accessions identified four haplotypes, all of which showed significantly non-random distribution (P < 0.01) among different growth types and geographical regions. In addition, a large number of nonsynonymous mutations within the coding region of BnaA3.FRI were revealed. Both association analysis and transgenic functional complementation demonstrated that mutations in the coding sequence of BnaA3.FRI lead to weak alleles, and subsequently to flowering time variation. This study for the first time provides a molecular basis for flowering time control by BnaA3.FRI in B. napus, and will facilitate predictive oilseed rape breeding to select varieties with favorable flowering time and better adaption to latitude and seasonal shifts due to changing climate. | |||
TO cite this article:YI Licong,WANG Jing. Sequence Variation and Functional Analysis of a FRIGIDA Orthologue (BnaA3.FRI) in Brassica napus[OL].[28 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4729628 |
6. OsANN4 confers stress induced by ABA signaling and regulates antioxidant accumulation | |||
Can Guan,Qian Zhang,Yingjie Gao,Jianchao Ma,Ying Zhu,Zhengge Zhu | |||
Agronomy 28 April 2017 | |||
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Abstract:Annexins are Ca2+-dependent phospholipids-binding proteins constituting evolutionary conserved multigene family that widely distributed throughout animals and plants. OsANN4 is a member of rice annexin protein family. However, the functions and mechanisms of OsANN4 in stress responses and signal pathways remain unclear. GUS staining assay and quantitative RT-PCR indicated that the expression of OsANN4 is tissue-specific. In this study, OsANN4 expression was high at seedling stage. The plants which knocking down OsANN4 through RNA interference were more sensitive to ABA at the seeds germination stage comparing to wild type. It suggested that OsANN4 was involved in response to ABA signaling under abiotic stress. Furthermore, yeast two-hybrid assays demonstrated that OsANN4 interacted with OsCDPK24. This may provide potential regulation cross-talk in the abiotic stress response. | |||
TO cite this article:Can Guan,Qian Zhang,Yingjie Gao,Jianchao Ma, et al. OsANN4 confers stress induced by ABA signaling and regulates antioxidant accumulation[OL].[28 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4730556 |
7. Mapping QTLs for Rice Heat Tolerance at Heading Stage | |||
Zhang Changquan,Chenfei,Hongran,Li Qianfeng,Liu Qiaoquan | |||
Agronomy 25 April 2017 | |||
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Abstract:In this paper, a japonica rice (Oryza sativa L.) variety Nipponbare, an indica variety 9311 and a set of chromosome segment substitution lines (CSSLs) which were generated using Nipponbare as the recipient parent and 9311 as the donor parent were used as the experimental materials. The CSSLs were grown in 2012 (normal temperature condition) and 2013 (high temperature condition) in Yangzhou, Jiangsu, and were used to map the quantitative trait loci (QTLs) for heat tolerance, based on the heat tolerance index [(The seed setting rate under normal temperature condition - The seed setting rate under high temperature condition) / The seed setting rate under normal temperature condition]. As a result, three QTLs for heat tolerance in rice were mapped on chromosomes 2, 4 and 12, respectively. They had LOD (logarithm of odds) scores of 2.56, 4.02 and 2.79, and contribution rates of 4. 95%, 7.99% and 5.44%. Among them, qHT12.1 showed positive effect, while qHT2.1 and qHT4.1 showed negative effect on heat tolerance. The results lay a foundation for the fine mapping and cloning of the QTLs and genes related to heat tolerance, and for the breeding of heat-tolerant rice varieties. | |||
TO cite this article:Zhang Changquan,Chenfei,Hongran, et al. Mapping QTLs for Rice Heat Tolerance at Heading Stage[OL].[25 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4729165 |
8. Construction of a genetic map using newly developed SSR markers for identifying QTL for plant height in jute (Corchorus capsularis) | |||
ZHANG Liwu | |||
Agronomy 27 March 2016 | |||
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Abstract:Jute, comprising white and dark jute, is one of the most important crops for natural ?ber production. In this study, a set of 197 novel SSRs from 529 publicly available dark jute genomic sequences were developed and used to assess polymorphism among six diverse accessions of dark and white jute. Of these SSRs, 142 (72.1%) successfully amplified at least one fragment and 122 (61.9%) detected polymorphism, showing the high transferability of these dark jute SSRs to white jute.An SSR genetic map of white jute using an F8 recombinant inbred lines population consisting of 94 lines derived from a cross between Huangma 179 and Aidianyehuangma was constructed. The map, comprising 39 newly developed SSR markers and spanning 389.9 cM with an average distance of 12.1cM between adjacent markers, was used for identifying quantitative trait loci (QTL) for plant height. Six QTL were detected, of which qPH.N1 was stable in different environments and regarded as a major QTL. This study has not only enriched the stock of jute SSR markers but also shed light on the genetic basisof plant height at the QTL level in jute. | |||
TO cite this article:ZHANG Liwu. Construction of a genetic map using newly developed SSR markers for identifying QTL for plant height in jute (Corchorus capsularis)[OL].[27 March 2016] http://en.paper.edu.cn/en_releasepaper/content/4682339 |
9. How leaves dissipate diurnal excess energy of photosynthetic apparatus resulted from drought in the field-grown cotton | |||
Ya-Li Zhang,Xiao-Ping Yi,He-Sheng Yao,Hong-Hai Luo,Ling-Gou,Wang-Feng Zhang | |||
Agronomy 20 November 2015 | |||
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Abstract:To clarify the diurnal balance between the light energy conversion and theCO2 assimilation capacity under the drought, leaf gas exchange, chlorophyll fluorescence, leaf movement and leaf micro-environment during the day time were examined in the field-grown cotton (Gossypium hirsutum L.) and then we evaluated the partitioning of absorbed light energy and the distribution of photosynthetic electron flow. The results showed that leaf diaheliotropic movement was pronounced in all treatments, the incident PAR light and leaf temperature increased in the morning and decreased in the afternoon and drought significantly increased leaf temperature. The diurnal time course of ΦPSII decreased in the morning and increased in the afternoon, moderate drought was obviously lower than well-watered plants, but the predawn Fv/Fm showed no differences among three treatments. It means that moderate drought stress induced down-regulation of photosynthetic apparatus but not caused permanent damage of PSII. The diurnal time course of ΦNPQ showed a maximum between 14:00 and 16:00 hours, and the value was greatest in the moderate drought stressed plants. The diurnal time courses of the distribution of photosynthetic electron flow showed that the drought-induced decrease in the proportion of electron flux for photosynthetic carbon reduction was mostly compensated by the electron flux for the photorespiratory carbon oxidation and the alternative electron flux driven by Mehler-peroxidase reaction and cyclic electron transport around PSI or nitrate reduction. Therefore, we concluded that (1) active leaf diaheliotropic movement works well under drought can optimize the incident light available for photosynthetic apparatus; (2) cotton uses electron transport flux under mild drought whereas electron transport flux and regulated non-photochemical energy dissipation under moderate drought for excess light energy dissipation; (3) photosynthetic electron transport flux is insensitive to drought because of stronger alternative electron sinks in cotton. | |||
TO cite this article:Ya-Li Zhang,Xiao-Ping Yi,He-Sheng Yao, et al. How leaves dissipate diurnal excess energy of photosynthetic apparatus resulted from drought in the field-grown cotton[OL].[20 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4660445 |
10. Identification of different cytoplasms based on newly developed mitotype-specific markers for marker-assisted selection breeding in cultivated Brassica napus | |||
HENG Shuangping,CHEN Fengyi,YANG Zonghui,HU Kaining,WEI Chao,WEN Jing,YI Bing,MA Chaozhi,TU Jinxing,SI Ping,FU Tingdong,SHEN Jinxiong | |||
Agronomy 30 September 2015 | |||
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Abstract:Mitotype-specific markers have been developed in order to distinguish among different mitotypes in plant. Here, we comparatively analyzed six sequenced mitochondrial genomes that are studied in Brassica napus and identified the collinear blocks and mitotype-specific sequences (MSSs) of these mitochondrial genomes. The collinear relationship between mitochondrial genomes of nap, cam, and pol cytoplasmic male sterility (CMS) lines were higher than those of other lines. After comparative analysis of the six sequenced mitochondrial genomes (cam, nap, ole, pol CMS, ogu CMS, and hau CMS), 90 MSSs with sizes ranging from 101 to 9981 bp and a total length of 103,756 bp (accounting for 6.77% of the mitochondrial genome sequences) were identified. Additionally, 12 mitotype-specific markers were developed based on the mitochondrial genome specific sequences in order to distinguish among these different mitotypes. Cytoplasms of 570 different inbred lines collected from various scientific research institutes in China were identified using the MSS markers developed in our study. In addition to confirming the accuracy of the cytoplasmic identification, we also identified mitotypes that have not been reported in Brassica napus. Our study may provide guidance for the classification of different mitotypes in B. napus breeding. | |||
TO cite this article:HENG Shuangping,CHEN Fengyi,YANG Zonghui, et al. Identification of different cytoplasms based on newly developed mitotype-specific markers for marker-assisted selection breeding in cultivated Brassica napus[OL].[30 September 2015] http://en.paper.edu.cn/en_releasepaper/content/4656522 |
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