Genetic improvement of peanut in Argentina between 1948 and 2004: Links between phenology and grain yield determinants

Haro, Ricardo; Baldessari, Jorge; Otegui, Marı́a Elena

doi:10.1016/j.fcr.2015.01.005

Cited by 10 publications

(5 citation statements)

References 53 publications

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“…From 1957 to 2016, pod yields in peanut cultivars increased significantly in all three regions (by about 1% per year), which is in accordance with previous findings (Haro et al., , ). The crude fat yield had a significant positive correlation with pod yield but no relationship with crude fat content in the Southeast Coast region.…”

Section: Discussionsupporting

confidence: 92%

“…The Yellow River region also had the most edible peanut cultivars (88) with high protein contents (meeting Grade I national standard, >26%), followed by the Southeast Coast region with 85 cultivars, and the Yangtze River region with 69 cultivars (Figure 7). Peanut is an important source of edible oil in China (Feng, Wan, & Zhang, 2003), and the breeding of peanut cultivars has greatly contributed to peanut production in China (Zhou, 2005 is in accordance with previous findings (Haro et al, 2015(Haro et al, , 2017. The crude fat yield had a significant positive correlation with pod yield but no relationship with crude fat content in the Southeast Coast region.…”

Section: Comparison Of Cultivars In Different Regionssupporting

confidence: 74%

“…Peanuts produced in China are used mainly for human consumption (edible seeds) and for oil extraction, so improving the protein and crude fat contents are important aims for breeders. 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%

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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

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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.

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Section: Discussionsupporting

confidence: 92%

Section: Comparison Of Cultivars In Different Regionssupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

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“…Trade-offs between flowering time and vegetative size are particularly important for annual plants, because they have a single chance at maximizing fitness. There is concern that changes in the global climate may affect plant populations’ persistence and crop yield by causing many annual plant species to flower earlier [ 7 , 8 , 9 , 10 ]. Thus, it is important to determine whether there are mechanisms that can release annual plants from the expected trade-off between earlier flowering and fitness (yield).…”

Section: Introductionmentioning

confidence: 99%

Inflorescence photosynthetic contribution to fitness releases Arabidopsis thaliana plants from trade-off constraints on early flowering

2017

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Leaves are thought to be the primary carbon source for reproduction in plants, so a positive relationship between vegetative size and reproductive output is expected, establishing a trade-off between time to reproduction and reproductive output. A common response to higher temperatures due to climate changes is the induction of earlier transition into reproduction. Thus, in annual plants, earlier transition into flowering can potentially constrain plant size and reduce seed production. However, trade-offs between early reproduction and fitness are not always observed, suggesting mechanisms to escape the constraints of early flowering do exist. Here, we test whether inflorescence photosynthesis contribution to the reproductive output of Arabidopsis thaliana can offset the cost of early reproduction. We followed the development, growth rate and fitness of 15 accessions, and removed all rosette leaves at flowering (prior to the completion of inflorescence development or any fruit production) in half of the plants to determine the ability of inflorescences to maintain fitness in the absence of leaves. Although leaf removal significantly reduced fruit number, seed weight and plant height, even the most severely impacted accessions maintained 35% of their fitness with the inflorescence as the sole photosynthetic organ; and some accessions experienced no reduction in fitness. Differences between accessions in their ability to maintain fitness after leaf removal is best explained by earlier flowering time and the ability to maintain as many or more branches after leaf removal as in the control treatment. Although earlier flowering does constrain plant vegetative size, we found that inflorescence photosynthesis can significantly contribute to seed production, explaining why early flowering plants can maintain high fitness despite a reduction in vegetative size. Thus, plants can be released from the usually assumed trade-offs associated with earlier reproduction, and selection on inflorescence traits can mediate the impact of climate change on phenology.

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“…Two such subspecies exist for peanut, subspecies hypogaea and fastigiata . Haro et al (2015) compared the vegetative and reproductive growth stages of peanut subspecies hypogaea and fastigiata concluding that the improved seed yield of hypogaea subspecies is largely attributed to an increased rate of flowering, number of flowers and duration of pod and seed development growth stages. Additional research also reported subspecies hypogaea to have greater leaf area index (LAI) and interception of photosynthetic active radiation when compared to fastigiata subspecies (Haro et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Soil water depletion of peanut subspecies as influenced by water‐use traits and soil water availability

Zurweller

Rowland

Tillman

et al. 2021

J Agronomy Crop Science

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Water-deficit stress is responsible for more crop loss than any other abiotic or biotic stress, resulting in many breeding programmes focusing on developing crop cultivars that can produce relatively greater yield under conditions of water limitation (Borém et al., 2012). Inconsistencies in determining water-deficit tolerant crop ideotypes may result from a lack of understanding or quantification of the coordination between above-and below-ground function of physiological traits. One of the most impactful above-ground functional traits influencing crop yield under water-deficit stress is the degree of transpiration reduction under water-deficit stress (Blum, 2009; de Wit, 1958;Passioura, 1996). The ability to maintain transpiration under dehydrating conditions allows for continued assimilation of CO 2 for photosynthesis, which is required for growth processes. However, the ability to maintain transpiration is linked

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Genetic improvement of peanut in Argentina between 1948 and 2004: Links between phenology and grain yield determinants

Cited by 10 publications

References 53 publications

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

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

Inflorescence photosynthetic contribution to fitness releases Arabidopsis thaliana plants from trade-off constraints on early flowering

Soil water depletion of peanut subspecies as influenced by water‐use traits and soil water availability

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