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Porcine Breeding Management in a Large-scale Piggery with Microbial Fermentation Bed 被引量:1
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作者 刘波 李兆龙 +6 位作者 唐建阳 黄勤楼 郑回勇 蓝江林 史怀 翁伯琦 余文权 《Agricultural Science & Technology》 CAS 2015年第1期160-166,171,共8页
[Objective] The behavior of eating, drinking, defecating and peeing of 1 500 pigs in a large-scale microbial fermentation bed-equipped piggery was observed. We hoped to find some simple indicators that could reflect t... [Objective] The behavior of eating, drinking, defecating and peeing of 1 500 pigs in a large-scale microbial fermentation bed-equipped piggery was observed. We hoped to find some simple indicators that could reflect the health status of swinery and to provide experience for the swinery performance management in large-scale microbial fermentation bed-equipped piggery. [Method] The body weight (BW), daily BW gain, feed intake and other indicators of different-day-old pigs were recorded in details. Based on the recorded data, the models between BW, BW gain, average daily feed intake and feed/gain ratio and growth days (d) were established. In addition, the incidences of pox-like macula (dermatitis), diarrhea (gastrointestinal disease), cough (respiratory disease), stiff pig (malnutrition), conjunctivitis (eye disease) and foot inflection (trauma) among fattening pigs were also investigated. [Result] The BW range, average BW, daily BW gain, breeding days, daily feed intake range, average daily feed intake, staged feed intake, accumulated feed intake, feed/gain ratio and accumulated feed/gain ratio of different-day-old pigs were studied, respectively. Four dynamic models were established for the growth of pigs: (1) the BW (y)-age (x) mod- el: y=0.758 9x-19.883 (3=0.993 7); (2) the BW gain (y)-age (x) model: y=1.039 5x05051 (F=0.885 4); (3) the average daily feed intake (y)-age (x) model: y=0.023 5x-0.334 3 (F=0.991 7); (4) the feed/gain ratio (y)-age (x) model: y=0.022x+0.427 8 (P=0.988 5). Based on these models, the corresponding theoretical growth value of pigs at different growth stage could be predicted. The main diseases occurred among the swinery in the large-scale microbial fermentation bed piggery included pox-like macula (dermatitis), diarrhea (gastrointestinal disease), cough (respiratory disease), stiff pig (mal- nutrition), conjunctivitis (eye disease) and foot inflection (trauma). The deadly infec- tious diseases had been not found among the pigs. [Conclusion] When the actual BW, BW gain, average daily feed intake and feed/gain ratio were all lower than the theoretical values predicted by the models, the management should be enhanced. The average daily feed intake of 60 to 65-day-old pigs was lower than the theoretic value, indicating that the pigs could not adapt nicely to the fermentation bed at the very early stage. When the pigs grew up to 70 to 75 d old, the average daily feed intake was higher than the theoretical value, indicating that the pigs had adapted to the fermentation bed. In particularly, average daily feed intake of 75-day-old pigs was higher than the theoretical value by 21%. It was suggested the fermentation bed was conducive to the growth of pigs. Considering the occurrence of diseases among pigs, the overall incidence was relatively low. The incidence of each disease was all lower than 10% with little difficulty in treating. If the management of mattress was strength- ened, such as paying attention to feeding and keeping water clean, many diseases could heal by themselves. 展开更多
关键词 Disease investigation large-scale breeding Microbial fermentation bed Porcine growth model
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Effects of Distiller's Grain Substrate with Acid Regulation on the Growth of Tobacco Seedlings in Floating Breeding System
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作者 Sheng JIANG Sang HU +10 位作者 Fei XIONG Yonghui ZHANG Chun XIA Zilin LI Yongyu ZHAO Guangming TANG Fenglan QIN Qixin GU Jinchao ZHAO Junfeng XIN Fuzhao NIAN 《Agricultural Biotechnology》 CAS 2018年第4期76-79,84,共5页
In order to reduce the use of peat resources and realize the sustainable development of tobacco, the pH of distiller s grain substrate was adjusted with humic acid, and the effects of various distiller s grain substra... In order to reduce the use of peat resources and realize the sustainable development of tobacco, the pH of distiller s grain substrate was adjusted with humic acid, and the effects of various distiller s grain substrates on the growth of tobacco seedlings were studied to find out the method of cultivating high-quality tobacco seedlings by using distiller s grain substrate. The results showed that when 60% of humic acid was added to the distiller s grain substrate made from coarse distiller s grains, fine distiller s grains, perlite and vermiculite, both the pH and electrical conductivity decreased significantly and were similar to that of the conventional substrate. Moreover, the emergence rate of tobacco seedlings, the rate of strong tobacco seedlings, leaf number, stem height, root growth and quality of tobacco seedlings were good. 展开更多
关键词 Distiller s grains Dubstrate Flue-cured tobacco Floating breeding of seedlings
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Scale Breeding and Reproduction Technique of Ficus tikoua Bur.Container Seedlings
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作者 Tinghong TAN Fan GAO +5 位作者 Yang XIAO Mingxing DAI Shunping BAI Shimei LIAO Chaojun FENG Chunfang WU 《Plant Diseases and Pests》 CAS 2023年第5期16-18,23,共4页
Based on the principle of asexual reproduction,a kind of scale breeding and reproduction technique of Ficus tikoua Bur.container seedlings was explored by using the characteristics of strong adaptability to the enviro... Based on the principle of asexual reproduction,a kind of scale breeding and reproduction technique of Ficus tikoua Bur.container seedlings was explored by using the characteristics of strong adaptability to the environment and fast growth and reproduction.Using non-woven bag as a breeding container for seedlings,the scale breeding and reproduction technique of F.tikoua container seedlings was summarized through the important links of seedling bed construction,seedling collection,soil configuration,container selection,cutting cultivation,field management,and disease and pest control.This technique can achieve differential,massive and sustainable efficient breeding and reproduction of F.tikoua seedlings in a short time. 展开更多
关键词 Ficus tikoua Bur Pharmaceutical/food resource Asexual reproduction Container seedling Scale breeding and reproduction
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Key Techniques of Industrial Seedling for Anthurium andraeanum 被引量:2
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作者 潘英文 林明光 王安石 《Agricultural Science & Technology》 CAS 2011年第4期509-513,共5页
[Objective] The aim was to study the techniques for the tissue culture,rapid propagation and transplantation of Anthurium andraeanum.[Method] The leaf,leaf stalk,spathe and spadix of the pot flower variety and cut flo... [Objective] The aim was to study the techniques for the tissue culture,rapid propagation and transplantation of Anthurium andraeanum.[Method] The leaf,leaf stalk,spathe and spadix of the pot flower variety and cut flower variety of A.andraeanum were used as explants,in order to investigate the influences of the explants selection,disinfection conditions and different media on the callus induction,proliferation and rooting.[Result] The leaf stalk of A.andraeanum was the optimum explant,with the highest callus induction rate(78.3%).The best disinfecting effect could be obtained when the explants was sterilized with 0.1% HgCl2 for 8 min.The optimum media for the callus induction of Ping Champion and MIDORI were respectively 1/2 MS+1.50 mg/L 6-BA+0.50 mg/L 2,4-D+0.10 mg/L NAA and 1/2 MS+1.50 mg/L 6-BA+1.00 mg/L KT+0.10 mg/L 2,4-D,while the optimum media for callus subculture of Ping Champion and MIDORI were respectively MS+1.00 mg/L 6-BA+0.50 mg/L NAA+0.30 mg/L 2,4-D and MS+0.50 mg/L 6-BA+0.50 mg/L KT+0.10 mg/L NAA.It was beneficial for the proliferation and growth of cluster buds while 10%(w/v)of coconut water or banana jam was added to MS medium at the proliferation stage,and the proliferation rate could be increased by 2.83 fold.At the rooting stage,the medium 1/2 MS+0.10 mg/L NAA+0.10 mg/L IAA was the optimum medium for rooting,and the rooting rate was up to 100%.[Conservation] The research results will lay a foundation for the establishment of the industrial seedling breeding system of A.andraeanum,and it will be significant for the development of A.andraeanum industry. 展开更多
关键词 Anthurium andraeanum Tissue culture Industrial seedling breeding
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Establishment of Three Breeding System of Virus-free Strawberry Plantlet in Infantry Regiment of the Twelve Division 被引量:2
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作者 史芳芳 《Agricultural Science & Technology》 CAS 2014年第7期1076-1078,共3页
Shoot-tip culture of strawberry is the most important way to get virus-free plants.Moreover,detoxification and rapid propagation are the key techniques for producing high-quality seeds and seedlings massively and rapi... Shoot-tip culture of strawberry is the most important way to get virus-free plants.Moreover,detoxification and rapid propagation are the key techniques for producing high-quality seeds and seedlings massively and rapidly and achieving the high-quality,high-yield and high-efficiency development of strawberry industry.We have recently produced virus-free strawberry seedlings by combing tissue culture technology and stolon-reproduction method and this technology has been widely used.In addition,a relatively perfect three breeding system of virus-free strawberry seedlings was established after production practices,guaranteeing the supply of high-quality seeds and seedlings and technical support for strawberry industry in corps. 展开更多
关键词 STRAWBERRY Virus-free seedling Tissue culture seedling breeding
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Identification of candidate genes that regulate the trade-off between seedling cold tolerance and fruit quality in melon (Cucumis melo L.) 被引量:1
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作者 Lili Li Qiong Li +16 位作者 Bin Chen Jiyu Wang Fei Ding Panqiao Wang Xiuyue Zhang Juan Hou Renren Luo Xiang Li Jingwen Zheng Sen Yang Luming Yang Lei Zhu Shouru Sun Changsheng Ma Qin Li Ying Li Jianbin Hu 《Horticulture Research》 SCIE CSCD 2023年第7期7-21,共15页
Trade-offs between survival and growth are widely observed in plants.Melon is an annual,trailing herb that produces economically valuable fruits that are traditionally cultivated in early spring in China.Melon seedlin... Trade-offs between survival and growth are widely observed in plants.Melon is an annual,trailing herb that produces economically valuable fruits that are traditionally cultivated in early spring in China.Melon seedlings are sensitive to low temperatures,and thus usually suffer from cold stress during the early growth period.However,little is known about the mechanism behind the trade-offs between seedling cold tolerance and fruit quality in melon.In this study,a total of 31 primary metabolites were detected from the mature fruits of eight melon lines that differ with respect to seedling cold tolerance;these included 12 amino acids,10 organic acids,and 9 soluble sugars.Our results showed that concentrations of most of the primary metabolites in the cold-resistant melons were generally lower than in the cold-sensitive melons;the greatest difference in metabolite levels was observed between the cold-resistant line H581 and the moderately cold-resistant line HH09.The metabolite and transcriptome data for these two lines were then subjected to weighted correlation network analysis,resulting in the identification of five key candidate genes underlying the balancing between seedling cold tolerance and fruit quality.Among these genes,CmEAF7 might play multiple roles in regulating chloroplast development,photosynthesis,and the ABA pathway.Furthermore,multi-method functional analysis showed that CmEAF7 can certainly improve both seedling cold tolerance and fruit quality in melon.Our study identified an agriculturally important gene,CmEAF7,and provides a new insight into breeding methods to develop melon cultivars with seedling cold tolerance and high fruit quality. 展开更多
关键词 seedling breeding CULTIVAR
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Identification Cold Tolerance of Pineapple Germplasms at Seedling Stage 被引量:1
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作者 Haiyan Shu Keming Li +2 位作者 Yanfei Ou Rulin Zhan Shenghe Chang 《American Journal of Plant Sciences》 2021年第12期1768-1779,共12页
Pineapple plant was always injured due to low temperature. Breeding varieties with high cold tolerance was the supreme way to resolve this problem and identifying cold tolerance of germplasms collected was necessary. ... Pineapple plant was always injured due to low temperature. Breeding varieties with high cold tolerance was the supreme way to resolve this problem and identifying cold tolerance of germplasms collected was necessary. In this study, SSR locus around homologous sequences of cold-tolerant genes w</span><span style="font-family:"">as</span><span style="font-family:""> searched and screened using MD-2 (cold-tolerant variety) and Tainong 17 (cold-sensitive variety). Seventy three pairs of primers of which PCR results were different between these two varieties were gotten. PCRs were performed using these as primers and genomic DNA of germplasms collected as templates. Six pairs of primers were found that their PCR results were in good consistent with cold tolerance. Using GLM (General linear model) association <span>mapping analysis, two SSR markers linked to cold tolerance were found. Their</span> efficiency was verified further using pineapple germplasms with high cold tolerance which had been validated in field by cold wave. They will be used in cold-tolerant breeding of pineapple in the future. 展开更多
关键词 PINEAPPLE Cold Tolerance seedling Stage Simple Sequence Repeat (SSR) breeding
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Pollution Control Programs of Large-Scale Livestock and Poultry Farms in the Dianchi Lake Basin 被引量:1
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作者 LI Zhong-jie ZHENG Yi-xin +1 位作者 XU Xiao-mei NI Jin-bi 《Animal Husbandry and Feed Science》 CAS 2011年第1期35-38,共4页
With the enlarging scale and intensifying production of livestock and poultry breeding, the environment pollution becomes increasingly prominent in the Dianchi Lake Basin since 1990s. According to the survey of "The ... With the enlarging scale and intensifying production of livestock and poultry breeding, the environment pollution becomes increasingly prominent in the Dianchi Lake Basin since 1990s. According to the survey of "The First National Census of Pollution Sources", occurrence and discharge of pollutants in large-scale livestock and poultry farms in this region were first understood. The pollution characteristics of large-scale live- stock and poultry breeding were also analyzed deeply. On this basis, the significance of pollution control programs for environment protection was investigated from aspects of pollution control policy, technology management and publicity. 展开更多
关键词 Dianchi Lake Basin large-scale livestock and poultry breeding Pollution control program
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Influence of Seedling Age on the Susceptibility of Tomato Plants to <i>Ralstonia solanacearum</i>during Protray Screening and at Transplanting
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作者 Pious Thomas Reshmi Upreti 《American Journal of Plant Sciences》 2014年第12期1755-1762,共8页
The study was undertaken to assess whether seedling age played any role in governing the vulnerability of tomato to the bacterial wilt pathogen, Ralstonia solanacearum, based on the preliminary observations that the e... The study was undertaken to assess whether seedling age played any role in governing the vulnerability of tomato to the bacterial wilt pathogen, Ralstonia solanacearum, based on the preliminary observations that the extent of mortality during seedling-stage screening was relatively less in older seedlings. Employing the virulent strain ‘NH-Av01’ isolated from tomato, 2-, 3-, 4- or 5-week-old seedlings of susceptible ‘Arka Vikas’ raised in organic cocopeat in 98 cavity protrays were inoculated with the pathogen through root-injury inoculation approach. Disease symptoms appeared earlier and with more severity in 2-week-old seedlings followed by 3-, 4- and 5-week-old saplings recording 74%, 68%, 63% and 49% mortality, respectively, after four weeks of inoculation suggesting that older the seedlings, less the susceptibility to the pathogen. The growth characteristics of seedlings (shoot height, shoot and root weights) showed a significant increase with seedling age (0.21, 0.54, 1.14 and 2.09 g gross weight/seedling at 2, 3, 4 and 5 weeks, respectively) indicating healthier saplings with delay in inoculation time. In subsequent trials, seedlings of 3, 4, 5 or 6 weeks were transplanted to field-sick soil in protrays or in pots with monitoring for 1 - 4 months which indicated a significant reduction in disease incidence and severity with increase in seedling age. The observations suggested that seedling age should be considered as a major factor influencing the susceptibility of tomato seedlings to R. solanacearum with the chances of variations in the extent of disease incidence or inconsistent results during seedling-stage screening and the possibility of escapes with older seedlings. Two-week seedlings formed the best when the aim is to induce maximum disease incidence, while transplanting at 5 - 6 weeks stage appeared the best when the objective is minimal disease incidence or formulating disease management strategies. 展开更多
关键词 Bacterial WILT Disease Resistance SCREENING Methodology seedling VIGOR Solanum lycopersicum Tomato breeding
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Problems in the Development of China's Dairy Cow Breeding and the Countermeasures
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作者 CHEN Zhi-ying GE Rui +2 位作者 HAN Qing ZHANG Yu-feng LI Ting 《Asian Agricultural Research》 2012年第6期11-14,共4页
This article offers an overview of the development of dairy cow breeding in China,and analyzes the problems in the development of dairy cow breeding in China as follows:the breeding scale is small;the pasture grass pr... This article offers an overview of the development of dairy cow breeding in China,and analyzes the problems in the development of dairy cow breeding in China as follows:the breeding scale is small;the pasture grass production cannot meet demand;the proportion of fine breed is not high and the dairy cow yield per unit is low;it lacks epidemic prevention and quarantine mechanism;economic benefits of large-scale breeding are not high.These problems have become bottleneck in the development of the dairy cow breeding.Finally countermeasures are put forward for the development of dairy cow breeding in China as follows:developing large-scale breeding,and increasing subsidies;supporting the development of grass industry,and ensuring the supply of good feed;strengthening cultivation and promotion of fine breed,and promoting the quality of fresh milk;improving the accountability system of dairy products,and giving play to supervisory role of the news media. 展开更多
关键词 DAIRY COW breeding large-scale breeding PROBLEMS C
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正交试验优化铁皮石斛传统种苗繁育技术
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作者 张志勇 周美玲 +2 位作者 郑新妹 张川 梁金平 《热带农业科学》 2024年第6期30-34,共5页
为了提高铁皮石斛传统育苗腋芽萌发成苗率,指导铁皮石斛传统育苗技术在生产上的推广应用,开展影响腋芽萌发成苗率因子[繁育模式(A)、激素处理(B)、育苗基质(C)、品系(D)]的四因素五水平正交试验研究。结果显示:影响传统育苗腋芽萌发成... 为了提高铁皮石斛传统育苗腋芽萌发成苗率,指导铁皮石斛传统育苗技术在生产上的推广应用,开展影响腋芽萌发成苗率因子[繁育模式(A)、激素处理(B)、育苗基质(C)、品系(D)]的四因素五水平正交试验研究。结果显示:影响传统育苗腋芽萌发成苗率因素主次顺序为D>A>B>C,4个因素的最优水平分别是A_(2)(整条平铺并覆盖基质1 cm左右)、B_(2)(NAA 0.5 mg/L+6-BA 0.5 mg/L)、C_(1)(苔鲜)、D_(4)(紫精灵),试验筛选出传统育苗因素最优组合A_(2)B_(2)C_(1)D_(4),其萌发成苗率可达81%,较自然腋芽萌发成苗率(10%~20%)大大提高。 展开更多
关键词 正交试验 铁皮石斛 育苗 繁育
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微生物发酵床养猪垫料研制番茄育苗基质的效果分析
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作者 陈燕萍 郑雪芳 +2 位作者 陈梅春 刘波 王阶平 《福建农业科技》 CAS 2024年第4期25-29,共5页
为了实现废弃资源的资源化利用,使用微生物发酵床养猪垫料研制番茄育苗基质,选取使用1年的微生物发酵床养猪垫料,提取其浸提液并稀释成不同浓度,以番茄种子萌发情况为指标,筛选基质中垫料适宜添加量,并通过穴盘育苗试验确定基础基质配方... 为了实现废弃资源的资源化利用,使用微生物发酵床养猪垫料研制番茄育苗基质,选取使用1年的微生物发酵床养猪垫料,提取其浸提液并稀释成不同浓度,以番茄种子萌发情况为指标,筛选基质中垫料适宜添加量,并通过穴盘育苗试验确定基础基质配方,进一步优化N、P、K用量,最终确定番茄育苗基质配方。结果表明:利用微生物发酵床养猪垫料研制番茄育苗基质的配方为垫料︰椰糠=3︰7(体积比),N用量0.3 kg·m^(−3)、P用量0.2 kg·m^(−3)、K用量0.1 kg·m^(−3);用该基质进行番茄育苗,出苗率达98%,幼苗的株高、茎粗、根长均显著优于市售草炭基质(对照);所繁育的幼苗移栽田间种植,其田间番茄苗的株高和挂果数均显著优于对照。番茄育苗基质的研制可实现微生物发酵床养猪垫料的资源化利用。 展开更多
关键词 番茄 微生物发酵床养猪垫料 育苗基质
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辽藁本种质创新、栽培繁育及分子生物学研究进展
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作者 樊勇 李旭 +3 位作者 录亿隆 于春雷 杨正书 孙文松 《辽宁农业科学》 2024年第1期68-72,共5页
辽藁本作为我国大宗药材,随着市场需求量的增加,种植面积也在逐年扩大,但是辽藁本栽培种较少、栽培技术落后,分子生物学等方面研究不够深入,严重制约了相关产业的发展。文章综述了辽藁本在种质创新、栽培技术研究、种苗繁育、药用成分... 辽藁本作为我国大宗药材,随着市场需求量的增加,种植面积也在逐年扩大,但是辽藁本栽培种较少、栽培技术落后,分子生物学等方面研究不够深入,严重制约了相关产业的发展。文章综述了辽藁本在种质创新、栽培技术研究、种苗繁育、药用成分分析、分子生物学及微生物组学等方面的研究进展,展望了辽藁本未来研究应关注的方向,为辽藁本的进一步深入研究和产业发展提供科学依据。 展开更多
关键词 辽藁本 种质创新 栽培繁育 药用成分 分子生物学
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无花果优质安全生产技术
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作者 郑婷 魏灵珠 +3 位作者 钱继昌 程建徽 向江 吴江 《浙江农业科学》 2024年第3期627-632,共6页
本文对无花果的优质安全生产技术进行了综述,涉及建园及设施选择、整形修剪、土肥管理、病虫害防治和苗木繁育等5个环节,对无花果生产过程中的选址要求、修剪方法、常见病虫害、土壤改良、灌水施肥标准以及常用的苗木繁育方法进行了详... 本文对无花果的优质安全生产技术进行了综述,涉及建园及设施选择、整形修剪、土肥管理、病虫害防治和苗木繁育等5个环节,对无花果生产过程中的选址要求、修剪方法、常见病虫害、土壤改良、灌水施肥标准以及常用的苗木繁育方法进行了详细阐述,以期为无花果的标准化生产实践提供参考。 展开更多
关键词 无花果 栽培技术 病虫害 苗木繁育 优质高产
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桂林地区百香果大杯苗培育及配套栽培技术
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作者 蒋雄英 莫皓蓝 +3 位作者 尹辉 杨艺玲 周宾 范大泳 《现代农业科技》 2024年第20期213-216,共4页
桂林地区发展百香果产业有天然的地域优势,但受气候因素影响很大,种植常规小苗,前期生长缓慢,生育季节推迟,影响全年生产。培育大杯苗,苗期在大棚内集中管理,有利于提高肥料利用率,减少农药使用量,降低管理成本;移栽大杯苗,可有效避开... 桂林地区发展百香果产业有天然的地域优势,但受气候因素影响很大,种植常规小苗,前期生长缓慢,生育季节推迟,影响全年生产。培育大杯苗,苗期在大棚内集中管理,有利于提高肥料利用率,减少农药使用量,降低管理成本;移栽大杯苗,可有效避开桂林地区早春低温阴雨天气的影响,更方便管理,促使百香果早开花、早结果,实现优质高产。基于此,介绍了利用温室大棚进行越冬大杯苗培育的方法,并阐述了配套栽培技术,以促使百香果稳产优质和农民增产增收,进而促进桂林地区百香果产业的可持续健康发展,助推乡村特色产业振兴。 展开更多
关键词 百香果 大杯苗 培育方法 栽培技术 广西桂林
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高糖新品种云蔗1640花叶病原的检测与脱毒种苗生产 被引量:1
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作者 吴转娣 赵培方 +4 位作者 杨洪昌 昝逢刚 覃伟 杨立凡 郭家文 《中国糖料》 2024年第2期1-8,共8页
【目的】甘蔗花叶病是导致甘蔗品种减产的重要病害,通过应用甘蔗健康种苗可以有效提高甘蔗种苗的抗病能力。‘云蔗1640’是由云南省农业科学院甘蔗所培育的高产高糖甘蔗新品种,适宜在我国热区推广种植。【方法】本研究通过田间采样调查... 【目的】甘蔗花叶病是导致甘蔗品种减产的重要病害,通过应用甘蔗健康种苗可以有效提高甘蔗种苗的抗病能力。‘云蔗1640’是由云南省农业科学院甘蔗所培育的高产高糖甘蔗新品种,适宜在我国热区推广种植。【方法】本研究通过田间采样调查结合RT-PCR检测的方法,完成了‘云蔗1640’甘蔗品种的花叶病毒带病情况调查,开展了‘云蔗1640’健康种苗的脱毒处理与品种的快繁。【结果】确认‘云蔗1640’携带有甘蔗花叶病毒,其主要的病原以甘蔗线条花叶病毒为主,甘蔗花叶病毒次之,不带有高粱花叶病毒。通过温水处理结合茎尖脱毒的方法培养获得了‘云蔗1640’健康种苗。研究表明经RT-PCR的方法检测线条花叶病毒和甘蔗花叶病毒的脱毒效率分别为10.12%和90.62%。经筛选出不带病原的脱毒种苗作为原种开展健康种苗的组培快繁。【结论】糖料蔗健康种苗的繁育是一种有效的良种繁育技术,可加快优异甘蔗新品种的推广与应用,为我国蔗糖产业的发展提供新的优异种质,是我国蔗区老品种提纯复壮的新来源。 展开更多
关键词 甘蔗 ‘云蔗1640’ 花叶病 脱毒种苗 种苗繁育与推广
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栽培方式对航天诱变当归SP_(2)繁种特性的影响 被引量:1
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作者 崔林刚 郭凤霞 +2 位作者 陈垣 徐波 李瑞霞 《核农学报》 CAS CSCD 北大核心 2024年第5期813-821,共9页
当归3年完成正常生活史,繁种周期长,成种株率低。为提高当归新品种选育效率,将搭载“长征7号”运载火箭在太空运行22 h(命名为航归22 h)和搭载“神舟十一号”宇宙飞船在太空运行33 d(命名为航归33 d)的当归种子作为SP0种子,以未搭载种... 当归3年完成正常生活史,繁种周期长,成种株率低。为提高当归新品种选育效率,将搭载“长征7号”运载火箭在太空运行22 h(命名为航归22 h)和搭载“神舟十一号”宇宙飞船在太空运行33 d(命名为航归33 d)的当归种子作为SP0种子,以未搭载种子为对照(CK),经育苗栽培获得SP_(2)种苗。采用留苗和移栽2种栽培方式,测定进入第3年繁种年的SP_(2)群体的种株率、农艺性状和种果重。结果表明,CK群体未能进入繁种期而被淘汰,太空诱变获得的2个群体均进入正常繁种年。航归22 h的返青株成活率较航归33 d提高14.65个百分点,成种株率提高19.7个百分点。与移栽航归33 d、留苗航归22 h和33 d群体相比较,移栽航归22 h的繁殖特性有明显改善,单株果重分别增加1527.5%、428.2%和377.7%,根重分别增加235.3%、256.8%和265.2%,根长分别增加44.5%、36.7%和6.0%,根粗分别增加83.3%、83.7%和83.9%。航归SP_(2)代群体性状综评指数大小依次为移栽航归22 h(0.8133)>留苗航归33 d(0.4083)>留苗航归22 h(0.2378)>移栽航归33 d(0.0334)。综上,太空搭载种子对当归具有诱变效应,运载火箭搭载时间短,群体诱变效应更佳,选育效率更高;采用移栽和留苗互补栽培可保障繁种的安全性。本研究结果为当归新品系扩繁提供了科学技术依据。 展开更多
关键词 当归 太空诱变 移栽 留苗 繁种
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北京市草莓育苗模式及发展建议
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作者 祝宁 宗静 +5 位作者 钟传飞 周宇 徐晨 刘雪莹 李楠 齐长红 《中国果菜》 2024年第9期72-75,共4页
随着草莓需求量的日益增加,对草莓的种植技术提出了更高的要求,尤其是育苗技术,育苗技术的完善是草莓产业不断提升的重要环节。本文分析了北京市草莓育苗产业发展现状,介绍了主要育苗模式及应用技术;提出除发挥北京市自身优势外,还应充... 随着草莓需求量的日益增加,对草莓的种植技术提出了更高的要求,尤其是育苗技术,育苗技术的完善是草莓产业不断提升的重要环节。本文分析了北京市草莓育苗产业发展现状,介绍了主要育苗模式及应用技术;提出除发挥北京市自身优势外,还应充分利用外埠冷凉地区条件进行优质草莓种苗繁育工作,健全标准化生产体系,形成“政府+科研单位+企业”的育苗管理模式,提升育苗水平,保障北京地区优质种苗供应。 展开更多
关键词 草莓 育苗 模式 标准化 种苗繁育
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羊栖菜优良品系对高温的耐受性比较
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作者 左晓洁 吴明江 +3 位作者 罗琳 马增岭 庞观凤 陈斌斌 《浙江农业学报》 CSCD 北大核心 2024年第1期148-155,共8页
以3种羊栖菜优良品系和野生型羊栖菜为材料,在25℃培养,比较高温条件下羊栖菜的生长状况,为耐高温品系的筛选提供数据支持。结果表明,长时间高温培养可降低各品系羊栖菜的光合性能,抑制其硝态氮的吸收与同化相关酶的活性,降低可溶性蛋... 以3种羊栖菜优良品系和野生型羊栖菜为材料,在25℃培养,比较高温条件下羊栖菜的生长状况,为耐高温品系的筛选提供数据支持。结果表明,长时间高温培养可降低各品系羊栖菜的光合性能,抑制其硝态氮的吸收与同化相关酶的活性,降低可溶性蛋白和可溶性碳水化合物的含量,增强其暗呼吸速率,最终抑制藻体生长。在高温条件下,相比其他品系,梭形气囊型羊栖菜的最大电子传递速率和饱和光强放氧速率最高,过氧化物酶活性最高且显著增加,丙二醛含量并没有显著增加。总体上梭形气囊型羊栖菜受高温的影响较小,具有较强的耐受性。在实际养殖生产中可以推广梭形气囊型羊栖菜,研究结果可为后续的品种改良提供依据。 展开更多
关键词 羊栖菜 种苗繁育 高温胁迫 光合作用 海藻养殖
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烟台市海洋牧场网箱养殖发展现状与对策
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作者 王晨光 袁一丹 +2 位作者 刘峰 陈英义 张启宇 《农业工程》 2024年第10期64-70,共7页
为研究海洋牧场网箱养殖发展现状,以烟台市海洋牧场为例,对其网箱养殖进行调研,归纳总结出烟台市海洋牧场网箱养殖发展情况。研究发现,烟台市海洋牧场网箱养殖存在缺乏养殖品种、养殖配套装备技术有待进一步发展完善、深水网箱养殖产业... 为研究海洋牧场网箱养殖发展现状,以烟台市海洋牧场为例,对其网箱养殖进行调研,归纳总结出烟台市海洋牧场网箱养殖发展情况。研究发现,烟台市海洋牧场网箱养殖存在缺乏养殖品种、养殖配套装备技术有待进一步发展完善、深水网箱养殖产业链不完善、政府支持力度不够及金融支撑体系有待健全等问题,提出重视海水养殖品种开发、重视养殖配套装备技术研发推广、贯彻三产融合理念、延伸产业链条、坚持规模化集约化发展、加大政策扶持力度及健全深水网箱养殖金融支撑体系等对策建议。 展开更多
关键词 海洋牧场 网箱养殖 网箱类型 苗种选育 水产品加工 烟台市
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