Basic vegetative period（BVP） is an important trait for determining flowering time and adaptation to variable environments.A short BVP barley mutant is about 30 d shorter than its wild type.Genetic analysis using 557...Basic vegetative period（BVP） is an important trait for determining flowering time and adaptation to variable environments.A short BVP barley mutant is about 30 d shorter than its wild type.Genetic analysis using 557 F 2 individuals revealed that the short BVP is governed by a single recessive gene（BVP-1） and was further validated in 2 090 F 3 individuals.The BVP-1 gene was first mapped to barley chromosome 1H using SSR markers.Comparative genomic analysis demonstrated that the chromosome region of BVP-1 is syntenic to rice chromosome 5 and Brachypodium chromosome 2.Barley ESTs/genes were identified after comparison with candidate genes in rice and Brachypodium;seven new gene-specific markers were developed and mapped in the mapping populations.The BVP-1 gene co-segregated with the Mot1 and Ftsh4 genes and was flanked by the gene-specific markers AK252360（0.2 cM） and CA608558（0.5 cM）.Further analysis demonstrated that barley and wheat share the same short BVP gene controlling early flowering.展开更多
Cotton(Gossypium spp.) is an important fiber and oil crop grown worldwide. Water and nutrient stresses are major issues affecting cotton production globally. Root traits are critical in improving water and nutrient up...Cotton(Gossypium spp.) is an important fiber and oil crop grown worldwide. Water and nutrient stresses are major issues affecting cotton production globally. Root traits are critical in improving water and nutrient uptake and maintaining plant productivity under optimal as well as drought conditions.However, root traits have rarely been utilized in cotton breeding programs, a major reason being the lack of information regarding genetic variability for root traits. The objective of this research was to evaluate ten selected cotton genotypes for root traits and water use efficiency. The tested genotypes included germplasm lines(PD 1 and PD 695) and cultivars that are currently grown in the southeastern USA(PHY 499 WRF, PHY 444 WRF, PHY 430 W3 FE, DP 1646 B2 XF, DP 1538 B2 XF, DP 1851 B3 XF, NG5007 B2 XF, and ST 5020 GLT). Experiments were conducted under controlled environmental conditions in 2018 and 2019. A hardpan treatment was included in the second year to evaluate the effect of a soil hardpan on root traits and water use efficiency. Genotype PHY 499 WRF ranked at the top and NG5007 B2 XF ranked at the bottom for root morphological traits(total and fine root length, surface area,and volume) and root weight. PHY 499 WRF was also one of the best biomass producers and had high water use efficiency. PHY 444 WRF, PHY 430 W3 FE, and PD-1 were the other best genotypes in terms of root traits and water use efficiency. All genotypes had higher values for root traits and water use efficiency under hardpan conditions. This trend indicates a horizontal proliferation of root systems when they incur a stress imposed by a hardpan. The genotypic differences identified in this research for root traits and water use efficiency would be valuable for selecting genotypes for cotton breeding programs.展开更多
To the Editor:The Pringle maneuver(PM)was initially described more than a century ago to control bleeding associated with hepatic trauma and it remains the most common method to block hepatic inflow and minimize blood...To the Editor:The Pringle maneuver(PM)was initially described more than a century ago to control bleeding associated with hepatic trauma and it remains the most common method to block hepatic inflow and minimize blood loss during hepatic resections[1].展开更多
Visiting Zhujiajiao ancient water town,reachable by metro,provides a perfect place to get a taste for Qing-era history,as well as temples,museums and the post office。I't is strange how the most alien of places ca...Visiting Zhujiajiao ancient water town,reachable by metro,provides a perfect place to get a taste for Qing-era history,as well as temples,museums and the post office。I't is strange how the most alien of places can sometimes feel the most like home.This is exactly how I felt when I first visited Zhujiajiao,and it is what has kept me revisiting year after year ever since.Zhujiajiao is a classic Chinese water town located in the Qingpu District of Shanghai.It was founded over 1,700 years ago and developed as a trading center for businesses specializing in rice and cloth.Nowadays,the small town has a population of less than 100,000 people,who are often dwarfed by the number of visiting tourists,especially on public holidays.展开更多
A trip off the beaten track in Xizang Autonomous Region will reward with stunning sights and isolated monasteries in the Tibetan grasslands and mountains.
Dr Sun Yat-sen(1866-1925)is a monumental figure in Chinese history.He is held in high esteem by Chinese people across the Chinese mainland and many other regions and countries,as well as among Chinese diasporas.He is ...Dr Sun Yat-sen(1866-1925)is a monumental figure in Chinese history.He is held in high esteem by Chinese people across the Chinese mainland and many other regions and countries,as well as among Chinese diasporas.He is regarded as a revolutionary,a visionary and a nation-builder.This might explain why so many cities in China promote tourist attractions connected to Sun's life and work.The story of Sun's life is not only historically important,it is also fascinating,especially for those who are interested in the Chinese revolution of 1911 and the foundation of the Republic of China.展开更多
Sanya,the tropical paradise on the southern tip of the island province of Hainan,has long been a destination for those in China seeking rest,relaxation and recuperation.With miles of quiet beaches,golden sands,and mag...Sanya,the tropical paradise on the southern tip of the island province of Hainan,has long been a destination for those in China seeking rest,relaxation and recuperation.With miles of quiet beaches,golden sands,and magnificent palm trees,Sanya reflects the serene holiday idyll of Hollywood fantasy.展开更多
Away from the frenetic pace of Hong Kong,no-car Lamma lsland is an oasis of calm with great food options,treks,beaches and a walk on the wild side Hong Kong is a dynamic and creative city,centered around a vibrant and...Away from the frenetic pace of Hong Kong,no-car Lamma lsland is an oasis of calm with great food options,treks,beaches and a walk on the wild side Hong Kong is a dynamic and creative city,centered around a vibrant and bustling island.At times,the city can provide a unique rush of energy.It can be empowering,exciting and exhilarating.However,the dense city center also has the ability to drain you of all your energy,especially on an oppressively hot summer's day.展开更多
There are many reasons why tourists visit China.International travelers are drawn to the fascinating history and breathtaking historical landmarks,including the Great Wall and the Terracotta Warriors.Others come to cr...There are many reasons why tourists visit China.International travelers are drawn to the fascinating history and breathtaking historical landmarks,including the Great Wall and the Terracotta Warriors.Others come to cruise the gorges of the Yangtze River,or marvel at sleepy pandas in bamboo forests.However,it might surprise people to know that China also has a lot to offer thrill-seeking visitors who enjoy flling their spare time with rather more extreme and unusual activities.Whether they enjoy rock climbing,skydiving or scuba-diving,China offers countless opportunities for adrenaline junkies toget their fix.展开更多
Chinese people often talk with pride about their ancient traditions,customs and practices.This is true across many fields of life,especially in areas such as the culinary arts.Indeed,for many people China is almost sy...Chinese people often talk with pride about their ancient traditions,customs and practices.This is true across many fields of life,especially in areas such as the culinary arts.Indeed,for many people China is almost synonymous with an assortment of traditional edible delicacies.However,China is not alone in this-many countries pride themselves on their traditional foods and beverages.展开更多
When tuning motion platforms,subjective opinion is usually regarded as sufficient for most applications,as it should provide verification that no false cueing occurs.However,often systems are not configured to fully u...When tuning motion platforms,subjective opinion is usually regarded as sufficient for most applications,as it should provide verification that no false cueing occurs.However,often systems are not configured to fully utilize the available motion for the desired purpose.This paper presents a new method to objectively tune simulation motion platforms.Enhanced usage of the available platform motion space is shown through an example of its application to a specific mission task.The difference in motion filter settings for two simulator platform geometries is shown.This displays the suitability of the platforms for completion of the two-axis lateral reposition task.展开更多
China and South Africa have enjoyed smooth bilateral relations since the establishment of formal diplomatic ties in 1998. The formalized relations in part assisted the significant growth in trade between these two reg...China and South Africa have enjoyed smooth bilateral relations since the establishment of formal diplomatic ties in 1998. The formalized relations in part assisted the significant growth in trade between these two regional leaders. In 2005 China展开更多
From sweaty airplanes to ice-cold French fries,life in China is full of surprises for one's sense of temperature.Some experiences are so fundamental and ingrained in our upbringing that we barely even notice them....From sweaty airplanes to ice-cold French fries,life in China is full of surprises for one's sense of temperature.Some experiences are so fundamental and ingrained in our upbringing that we barely even notice them.We certainly,don't consider them as dimensions of our culture.We consider them to be simple truths,like ice is cold and fire is hot.展开更多
Names are only labels;they do not define us.Our personalities are distinct and separate from them.As Shakespeare wrote so eloquently"What's in a name?That which we call a rose by any other name would smell as...Names are only labels;they do not define us.Our personalities are distinct and separate from them.As Shakespeare wrote so eloquently"What's in a name?That which we call a rose by any other name would smell as sweet."However,research has increasingly shown that people hold stereotypes about other people due to their names.展开更多
基金supported by the Grain Research and Development Cooperation, Australia and the Chinese Scholarship Council
文摘Basic vegetative period（BVP） is an important trait for determining flowering time and adaptation to variable environments.A short BVP barley mutant is about 30 d shorter than its wild type.Genetic analysis using 557 F 2 individuals revealed that the short BVP is governed by a single recessive gene（BVP-1） and was further validated in 2 090 F 3 individuals.The BVP-1 gene was first mapped to barley chromosome 1H using SSR markers.Comparative genomic analysis demonstrated that the chromosome region of BVP-1 is syntenic to rice chromosome 5 and Brachypodium chromosome 2.Barley ESTs/genes were identified after comparison with candidate genes in rice and Brachypodium;seven new gene-specific markers were developed and mapped in the mapping populations.The BVP-1 gene co-segregated with the Mot1 and Ftsh4 genes and was flanked by the gene-specific markers AK252360（0.2 cM） and CA608558（0.5 cM）.Further analysis demonstrated that barley and wheat share the same short BVP gene controlling early flowering.
基金the South Carolina Cotton Board and Cotton Incorporated for funding this project。
文摘Cotton(Gossypium spp.) is an important fiber and oil crop grown worldwide. Water and nutrient stresses are major issues affecting cotton production globally. Root traits are critical in improving water and nutrient uptake and maintaining plant productivity under optimal as well as drought conditions.However, root traits have rarely been utilized in cotton breeding programs, a major reason being the lack of information regarding genetic variability for root traits. The objective of this research was to evaluate ten selected cotton genotypes for root traits and water use efficiency. The tested genotypes included germplasm lines(PD 1 and PD 695) and cultivars that are currently grown in the southeastern USA(PHY 499 WRF, PHY 444 WRF, PHY 430 W3 FE, DP 1646 B2 XF, DP 1538 B2 XF, DP 1851 B3 XF, NG5007 B2 XF, and ST 5020 GLT). Experiments were conducted under controlled environmental conditions in 2018 and 2019. A hardpan treatment was included in the second year to evaluate the effect of a soil hardpan on root traits and water use efficiency. Genotype PHY 499 WRF ranked at the top and NG5007 B2 XF ranked at the bottom for root morphological traits(total and fine root length, surface area,and volume) and root weight. PHY 499 WRF was also one of the best biomass producers and had high water use efficiency. PHY 444 WRF, PHY 430 W3 FE, and PD-1 were the other best genotypes in terms of root traits and water use efficiency. All genotypes had higher values for root traits and water use efficiency under hardpan conditions. This trend indicates a horizontal proliferation of root systems when they incur a stress imposed by a hardpan. The genotypic differences identified in this research for root traits and water use efficiency would be valuable for selecting genotypes for cotton breeding programs.
文摘To the Editor:The Pringle maneuver(PM)was initially described more than a century ago to control bleeding associated with hepatic trauma and it remains the most common method to block hepatic inflow and minimize blood loss during hepatic resections[1].
文摘Visiting Zhujiajiao ancient water town,reachable by metro,provides a perfect place to get a taste for Qing-era history,as well as temples,museums and the post office。I't is strange how the most alien of places can sometimes feel the most like home.This is exactly how I felt when I first visited Zhujiajiao,and it is what has kept me revisiting year after year ever since.Zhujiajiao is a classic Chinese water town located in the Qingpu District of Shanghai.It was founded over 1,700 years ago and developed as a trading center for businesses specializing in rice and cloth.Nowadays,the small town has a population of less than 100,000 people,who are often dwarfed by the number of visiting tourists,especially on public holidays.
文摘A trip off the beaten track in Xizang Autonomous Region will reward with stunning sights and isolated monasteries in the Tibetan grasslands and mountains.
文摘Dr Sun Yat-sen(1866-1925)is a monumental figure in Chinese history.He is held in high esteem by Chinese people across the Chinese mainland and many other regions and countries,as well as among Chinese diasporas.He is regarded as a revolutionary,a visionary and a nation-builder.This might explain why so many cities in China promote tourist attractions connected to Sun's life and work.The story of Sun's life is not only historically important,it is also fascinating,especially for those who are interested in the Chinese revolution of 1911 and the foundation of the Republic of China.
文摘Sanya,the tropical paradise on the southern tip of the island province of Hainan,has long been a destination for those in China seeking rest,relaxation and recuperation.With miles of quiet beaches,golden sands,and magnificent palm trees,Sanya reflects the serene holiday idyll of Hollywood fantasy.
文摘Away from the frenetic pace of Hong Kong,no-car Lamma lsland is an oasis of calm with great food options,treks,beaches and a walk on the wild side Hong Kong is a dynamic and creative city,centered around a vibrant and bustling island.At times,the city can provide a unique rush of energy.It can be empowering,exciting and exhilarating.However,the dense city center also has the ability to drain you of all your energy,especially on an oppressively hot summer's day.
文摘There are many reasons why tourists visit China.International travelers are drawn to the fascinating history and breathtaking historical landmarks,including the Great Wall and the Terracotta Warriors.Others come to cruise the gorges of the Yangtze River,or marvel at sleepy pandas in bamboo forests.However,it might surprise people to know that China also has a lot to offer thrill-seeking visitors who enjoy flling their spare time with rather more extreme and unusual activities.Whether they enjoy rock climbing,skydiving or scuba-diving,China offers countless opportunities for adrenaline junkies toget their fix.
文摘Chinese people often talk with pride about their ancient traditions,customs and practices.This is true across many fields of life,especially in areas such as the culinary arts.Indeed,for many people China is almost synonymous with an assortment of traditional edible delicacies.However,China is not alone in this-many countries pride themselves on their traditional foods and beverages.
文摘When tuning motion platforms,subjective opinion is usually regarded as sufficient for most applications,as it should provide verification that no false cueing occurs.However,often systems are not configured to fully utilize the available motion for the desired purpose.This paper presents a new method to objectively tune simulation motion platforms.Enhanced usage of the available platform motion space is shown through an example of its application to a specific mission task.The difference in motion filter settings for two simulator platform geometries is shown.This displays the suitability of the platforms for completion of the two-axis lateral reposition task.
文摘China and South Africa have enjoyed smooth bilateral relations since the establishment of formal diplomatic ties in 1998. The formalized relations in part assisted the significant growth in trade between these two regional leaders. In 2005 China
文摘From sweaty airplanes to ice-cold French fries,life in China is full of surprises for one's sense of temperature.Some experiences are so fundamental and ingrained in our upbringing that we barely even notice them.We certainly,don't consider them as dimensions of our culture.We consider them to be simple truths,like ice is cold and fire is hot.
文摘Names are only labels;they do not define us.Our personalities are distinct and separate from them.As Shakespeare wrote so eloquently"What's in a name?That which we call a rose by any other name would smell as sweet."However,research has increasingly shown that people hold stereotypes about other people due to their names.
