Maize yield improvements in China: past trends and future directions

Qin, Xiaoliang; Fěng, Fang; Li, Yajun; Xu, Shutu; Siddique, Kadambot H. M.; Liao, Yuncheng

doi:10.1111/pbr.12347

Cited by 64 publications

(33 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…During the past six decades, much work has been done to evaluate the effects of plant population on maize grain yield in a wide variety of environments and regions (Duncan, 1958;Pretorius and Human, 1987;Ciampitti and Vyn, 2012;Hörbe et al, 2013;Assefa et al, 2016;Qin et al, 2016). Rainfall is a major determinant of differences in agronomic practices used between regions.…”

Section: Plant Population and Maize Grain Yield: A Global Systematic mentioning

confidence: 99%

Plant Population and Maize Grain Yield: A Global Systematic Review of Rainfed Trials

Haarhoff

Swanepoel

2018

Crop Science

View full text Add to dashboard Cite

Maize (Zea mays L.) productivity has increased globally as a result of improved genetics and agronomic practices. Plant population and row spacing are two key agronomic factors known to have a strong influence on maize grain yield. A systematic review was conducted to investigate the effects of plant population on maize grain yield, differentiating between rainfall regions, N input, and soil tillage system (conventional tillage [CT] and no‐tillage [NT]). Data were extracted from 64 peer‐reviewed articles reporting on rainfed field trials, representing 13 countries and 127 trial locations. In arid environments, maize grain yield was low (mean maize grain yield = 2448 kg ha−1) across all plant populations with no clear response to plant population. Variation in maize grain yield was high in semiarid environments where the polynomial regression (p < 0.001, n = 951) had a maximum point at ∼140,000 plants ha−1, which reflected a maize grain yield of 9000 kg ha−1. In subhumid environments, maize grain yield had a positive response to plant population (p < 0.001). Maize grain yield increased for both CT and NT systems as plant population increased. In high‐N‐input (r2 = 0.19, p < 0.001, n = 2 018) production systems, the response of plant population to applied N was weaker than in medium‐N‐input (r2 = 0.49, p < 0.001, n = 680) systems. There exists a need for more metadata to be analyzed to provide improved recommendations for optimizing plant populations across different climatic conditions and rainfed maize production systems. Overall, the importance of optimizing plant population to local environmental conditions and farming systems is illustrated.

show abstract

Section: Plant Population and Maize Grain Yield: A Global Systematic mentioning

confidence: 99%

Plant Population and Maize Grain Yield: A Global Systematic Review of Rainfed Trials

Haarhoff

Swanepoel

2018

Crop Science

View full text Add to dashboard Cite

show abstract

“…The development of new peanut cultivars in China has significantly contributed to increased quality and yields (Yu, ; Huang et al., ; Haro, Baldessari, & Otegui, , ) and oil contents (>55%) (Yu, ). However, there have been limited studies on improving peanut cultivars in China (Zhang et al., ) compared with those on wheat, maize, soybean and other crops (Luque, Cirilo, & Otegui, ; Sun, Wang, Wang, Chen, & Zhang, ; Qin, Zhang et al., ; Qin et al., , ).…”

Section: Introductionmentioning

confidence: 99%

Changes in the protein and fat contents of peanut (Arachis hypogaea L.) cultivars released in China in the last 60 years

Zhang

Qin

et al. 2018

Plant Breeding

Self Cite

View full text Add to dashboard Cite

Peanut is an important oil and cash crop in China. We selected 540 peanut cultivars—released in three ecological regions of China (Yellow River, Yangtze River and Southeast Coast regions)—to examine changes in quality characters and pod yield in the last 60 years. From 1957 to 2016, crude fat, protein and pod yields in peanut cultivars increased significantly in the three regions. In contrast, the crude fat content, as opposed to its yield, did not change in the Yellow River region, increased in the Yangtze River region and decreased in the Southeast Coast region, and the protein content decreased in the Yellow and Yangtze River regions but did not change in the Southeast Coast region. Peanut cultivars grown in the Yellow and Yangtze River regions had higher mean crude fat contents, while those in the Southeast Coast region had higher mean protein contents. In future, breeders and farmers should pay more attention to high protein peanuts in the Southeast Coast region and high oil peanuts in the Yellow River and Yangtze River regions.

show abstract

“…Maize has become the largest crop in China, and China is the second largest maize producer in the world (http://data.stats.gov.cn/english/; Ci et al, ). During the past several decades, average yield per hectare in maize has increased significantly (Duvick, ; Ci et al, , Ci et al, ; Qin et al, ). Crop management and genetic improvements have been largely responsible for the increase in maize yield.…”

Section: Introductionmentioning

confidence: 99%

“…Genetic yield gain as a result of adaptation to increases in plant density is perhaps the most clear‐cut and quantifiable change in maize hybrids over the years (Duvick, ; Edmeades, Banziger, Campos, & Schussler, ). However, planting density of maize has remained at approximately 40,000 plants per ha from the 1960s to 2010s in the southwest region of China (Qin et al, ), and planting density in this agroecological region still has potential room for this figure to increase. Therefore, the investigation and assessment of genetic mechanisms involved in plant high‐density tolerance for maize grain yield in southwest China would provide insight into understanding the phenomenon and optimization of breeding for grain yield.…”

Section: Introductionmentioning

confidence: 99%

Quantitative trait loci mapping for yield‐related traits under low and high planting densities in maize (Zea mays)

Liu

Hou

et al. 2019

Plant Breeding

View full text Add to dashboard Cite

Average maize yield per hectare has increased significantly because of the improvement in high-density tolerance, but little attention has been paid to the genetic mechanism of grain yield response to high planting density. Here, we used a population of 301 recombinant inbred lines (RILs) derived from the cross YE478 × 08-641 to detect quantitative trait loci (QTLs) for 16 yield-related traits under two planting densities (57,000 and 114,000 plants per ha) across four environments. These yield-related traits responded differently to high-density stress. A total of 110 QTLs were observed for these traits: 33 QTLs only under low planting density, 50 QTLs under high planting density and 27 QTLs across both densities. Only two major QTLs, qCD6 and qWKEL2-2, were identified across low-and high-density treatments. Seven environmentally stable QTLs were also observed containing qED6, qWKEL3, qRN3-3, qRN7-2, qRN9-2 and qRN10 across both densities, as well as qRN9-1 under low density. In addition, 16 and eight pairs of loci with epistasis interaction (EPI) were detected under low and high planting densities, respectively. Additionally, nine and 17 loci showed QTL × environment interaction (QEI) under low-and high-density conditions, respectively. These interactions are of lesser importance than the main QTL effects. We also observed 26 pleiotropic QTL clusters, and the hotspot region 3.08 concentrated nine QTLs, suggesting its great importance for maize yield. These findings suggested that multiple minor QTLs, loci with EPI and QEI, pleiotropy and the complex network of "crosstalk" among them for yield-related traits were greatly influenced by plant density, which increases our understanding of the genetic mechanism of yield-related traits for high-density tolerance. K E Y W O R D Shigh-density tolerance, maize, quantitative trait loci, recombinant inbred lines, yield-related traits

show abstract

Maize yield improvements in China: past trends and future directions

Cited by 64 publications

References 23 publications

Plant Population and Maize Grain Yield: A Global Systematic Review of Rainfed Trials

Plant Population and Maize Grain Yield: A Global Systematic Review of Rainfed Trials

Changes in the protein and fat contents of peanut (Arachis hypogaea L.) cultivars released in China in the last 60 years

Quantitative trait loci mapping for yield‐related traits under low and high planting densities in maize (Zea mays)

Contact Info

Product

Resources

About