Genetic diversity and population structure among eight Chinese indigenous goat breeds in the Yellow River valley

2017 ◽  
Vol 148 ◽  
pp. 87-92 ◽  
Author(s):  
Xiaoyong Du ◽  
Jianhua Cao ◽  
Xu Han ◽  
Huaizhi Hao ◽  
Mei Yu ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Yellow River ◽  
River Valley ◽  
The Yellow River ◽  
Yellow River Valley ◽  
Indigenous Goat

Resource use efficiency in a cotton-wheat double-cropping system in the Yellow River Valley of China

2020 ◽  
Vol 56 (3) ◽  
pp. 422-439
Author(s):  
Guoping Wang ◽  
Yabing Li ◽  
Yingchun Han ◽  
Zhanbiao Wang ◽  
Beifang Yang ◽  
...  
Keyword(s):  
Resource Use ◽  
Yellow River ◽  
Cropping Systems ◽  
Cropping System ◽  
River Valley ◽  
The Yellow River ◽  
Resource Use Efficiency ◽  
Yellow River Valley ◽  
Double Cropping ◽  
Use Efficiency

AbstractThe cotton-wheat double-cropping system is widely used in the Yellow River Valley of China, but whether and how different planting patterns within cotton-wheat double-cropping systems impact heat and light use efficiency have not been well documented. A field experiment investigated the effects of the cropping system on crop productivity and the capture and use efficiency of heat and light in two fields differing in soil fertility. Three planting patterns, namely cotton intercropped with wheat (CIW), cotton directly seeded after wheat (CDW), and cotton transplanted after wheat (CTW), as well as one cotton monoculture (CM) system were used. Cotton-wheat double cropping significantly increased crop productivity and land equivalent ratios relative to the CM system in both fields. As a result of increased growing degree days (GDD), intercepted photosynthetically active radiation (IPAR), and photothermal product (PTP), the capture of light and heat in the double-cropping systems was compared with that in the CM system in both fields. With improved resource capture, the double-cropping systems exhibited a higher light and heat use efficiency according to thermal product efficiency, solar energy use efficiency (Eu), radiation use efficiency (RUE), and PTP use efficiency (PTPU). The cotton lint yield and biomass were not significantly correlated with RUE across cropping patterns, indicating that RUE does not limit cotton production. Among the double-cropping treatments, CDW had the lowest GDD, IPAR, and PTP values but the highest heat and light resource use efficiency and highest overall resource use efficiency. This good performance was even more obvious in the high-fertility field. Therefore, we encourage the expanded use of CDW in the Yellow River Valley, especially in fields with high fertility, given the high productivity and resource use efficiency of this system. Moreover, the use of agronomic practices involving a reasonably close planting density, optimized irrigation and nutrient supply, and the application of new short-season varieties of cotton or wheat can potentially enhance CDW crop yields and productivity.

scholarly journals Effects of chemical topping on cotton development, yield and quality in the Yellow River Valley of China

2022 ◽  
Vol 21 (1) ◽  
pp. 78-90
Author(s):  
Ling-xiao ZHU ◽  
Lian-tao LIU ◽  
Hong-chun SUN ◽  
Yong-jiang ZHANG ◽  
Ke ZHANG ◽  
...  
Keyword(s):  
Yellow River ◽  
River Valley ◽  
The Yellow River ◽  
Yellow River Valley ◽  
Yield And Quality

Effect of planting date and plant density on cotton traits as relating to mechanical harvesting in the Yellow River valley region of China

2016 ◽  
Vol 198 ◽  
pp. 112-121 ◽  
Author(s):  
Xiangru Wang ◽  
Yuru Hou ◽  
Mingwei Du ◽  
Dongyong Xu ◽  
Huaiyu Lu ◽  
...  
Keyword(s):  
Plant Density ◽  
Yellow River ◽  
Planting Date ◽  
River Valley ◽  
The Yellow River ◽  
Yellow River Valley

scholarly journals Geotechnical properties and construction technique of the 'Han-chiku' earth-filled remains located in the Yellow River Valley, China

2007 ◽  
Vol 2 (4) ◽  
pp. 287-295 ◽  
Author(s):  
Katsutada ONITSUKA ◽  
Peihang CHEN ◽  
Peihua TONG ◽  
Takehito NEGAMI ◽  
Kei HAYAKAWA
Keyword(s):  
Yellow River ◽  
Geotechnical Properties ◽  
River Valley ◽  
The Yellow River ◽  
Construction Technique ◽  
Yellow River Valley

Water Right Institution and Strategies of the Yellow River Valley

2008 ◽  
Vol 22 (10) ◽  
pp. 1499-1519 ◽  
Author(s):  
H. R. Wang ◽  
Y. Y. Dong ◽  
Y. Wang ◽  
Q. Liu
Keyword(s):  
Yellow River ◽  
River Valley ◽  
The Yellow River ◽  
Yellow River Valley ◽  
Water Right

A simplified pruning method for profitable cotton production in the Yellow River valley of China

2014 ◽  
Vol 164 ◽  
pp. 22-29 ◽  
Author(s):  
Jianlong Dai ◽  
Zhen Luo ◽  
Weijiang Li ◽  
Wei Tang ◽  
Dongmei Zhang ◽  
...  
Keyword(s):  
Yellow River ◽  
River Valley ◽  
The Yellow River ◽  
Cotton Production ◽  
Yellow River Valley ◽  
Pruning Method

scholarly journals Genetic Diversity and Population Genetic Structure of Ancient Platycladus orientalis L. (Cupressaceae) in the Middle Reaches of the Yellow River by Chloroplast Microsatellite Markers

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 592
Author(s):  
Bei Cui ◽  
Ping Deng ◽  
Sheng Zhang ◽  
Zhong Zhao
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Genetic Differentiation ◽  
Yellow River ◽  
The Yellow River ◽  
Group Method ◽  
Chloroplast Microsatellite ◽  
Genetic Population ◽  
Geographic Population ◽  
Platycladus Orientalis

Ancient trees are famous for their life spans of hundreds or even thousands of years. These trees are rare, a testament to history and are important for scientific research. Platycladus orientalis, with the longest life span and a beautiful trunk, has become the most widely planted tree species and is believed to be sacred in China. Extensive declines in habitat area and quality pose the greatest threats to the loss of genetic diversity of ancient P. orientalis trees in the middle reaches of the Yellow River. Strengthening the protection of P. orientalis genetic resources is of great significance for the long-term development of reasonable conservation and breeding strategies. To better understand the genetic diversity and population structure of P. orientalis, we successfully analyzed four polymorphic chloroplast simple sequence repeat (cpSSR) loci and applied them to diversity and population structure analyses of 202 individuals from 13 populations in the middle reaches of the Yellow River. Based on the cpSSR data, 16 alleles were detected across 202 individuals, and a moderate level of genetic diversity was inferred from the genetic diversity parameters (H = 0.367 and AR = 1.964). The mean pairwise genetic differentiation coefficient (Fst) between populations was 0.153, indicating relatively high genetic population differentiations. Analysis of molecular variance (AMOVA) showed that only 8% of the variation occurred among populations. Structure analysis divided the 13 P. orientalis populations into two groups with no significant geographic population structure, which was consistent with the unweighted pair group method with arithmetic mean (UPGMA) and Mantel test results. These results may indicate that transplanting and cultivation by ancient human activities are the main factors responsible for the revealed pattern of genetic differentiation of ancient P. orientalis populations. Our research is of great significance for the future establishment of protection schemes and scientific breeding of P. orientalis.

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