Maize/peanut intercropping increases photosynthetic characteristics, 13C-photosynthate distribution, and grain yield of summer maize
Intercropping is used widely by smallholder farmers in developing countries to increase land productivity and profitability. We conducted a maize/peanut intercropping experiment in the 2015 and 2016 growing seasons in Shandong, China. Treatments included sole maize (SM), sole peanut (SP), and an int...
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doaj-a8f2c5229bfd4267b80f48f38831bfac2021-06-08T04:41:08ZengElsevierJournal of Integrative Agriculture2095-31192019-10-01181022192229Maize/peanut intercropping increases photosynthetic characteristics, 13C-photosynthate distribution, and grain yield of summer maizeYan-hong LI0De-yang SHI1Guang-hao LI2Bin ZHAO3Ji-wang ZHANG4Peng LIU5Baizhao REN6Shu-ting DONG7State Key Laboratory of Crop Biology/College of Agronomy, Shandong Agricultural University, Tai'an 271018, P.R.China; Soil Fertilizer Station of Yantai Agricultural Technology Promotion Center, Yantai 264000, P.R.ChinaState Key Laboratory of Crop Biology/College of Agronomy, Shandong Agricultural University, Tai'an 271018, P.R.China; Institute of Maize and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai 265500, P.R.ChinaState Key Laboratory of Crop Biology/College of Agronomy, Shandong Agricultural University, Tai'an 271018, P.R.ChinaState Key Laboratory of Crop Biology/College of Agronomy, Shandong Agricultural University, Tai'an 271018, P.R.ChinaState Key Laboratory of Crop Biology/College of Agronomy, Shandong Agricultural University, Tai'an 271018, P.R.ChinaState Key Laboratory of Crop Biology/College of Agronomy, Shandong Agricultural University, Tai'an 271018, P.R.ChinaState Key Laboratory of Crop Biology/College of Agronomy, Shandong Agricultural University, Tai'an 271018, P.R.ChinaState Key Laboratory of Crop Biology/College of Agronomy, Shandong Agricultural University, Tai'an 271018, P.R.China; Correspondence DONG Shu-tingIntercropping is used widely by smallholder farmers in developing countries to increase land productivity and profitability. We conducted a maize/peanut intercropping experiment in the 2015 and 2016 growing seasons in Shandong, China. Treatments included sole maize (SM), sole peanut (SP), and an intercrop consisting of four rows of maize and six rows of peanut (IM and IP). The results showed that the intercropping system had yield advantages based on the land equivalent ratio (LER) values of 1.15 and 1.16 in the two years, respectively. Averaged over the two years, the yield of maize in the intercropping was increased by 61.05% compared to that in SM, while the pod yield of peanut was decreased by 31.80% compared to SP. Maize was the superior competitor when intercropped with peanut, and its productivity dominated the yield of the intercropping system in our study. The increased yield was due to a higher kernel number per ear (KNE). Intercropping increased the light transmission ratio (LTR) of the ear layer in the maize canopy, the active photosynthetic duration (APD), and the harvest index (HI) compared to SM. In addition, intercropping promoted the ratio of dry matter accumulation after silking and the distribution of 13C-photosynthates to grain compared to SM. In conclusion, maize/peanut intercropping demonstrated the potential to improve the light condition of maize, achieving enhanced photosynthetic characteristics that improved female spike differentiation, reduced barrenness, and increased KNE. Moreover, dry matter accumulation and 13C-photosynthates distribution to grain of intercropped maize were improved, and a higher grain yield was ultimately obtained.http://www.sciencedirect.com/science/article/pii/S209531191962616Xmaizeintercroppingpeanutland equivalent ratio (LER)net photosynthetic rate (Pn)13C-photosynthates distribution |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yan-hong LI De-yang SHI Guang-hao LI Bin ZHAO Ji-wang ZHANG Peng LIU Baizhao REN Shu-ting DONG |
spellingShingle |
Yan-hong LI De-yang SHI Guang-hao LI Bin ZHAO Ji-wang ZHANG Peng LIU Baizhao REN Shu-ting DONG Maize/peanut intercropping increases photosynthetic characteristics, 13C-photosynthate distribution, and grain yield of summer maize Journal of Integrative Agriculture maize intercropping peanut land equivalent ratio (LER) net photosynthetic rate (Pn) 13C-photosynthates distribution |
author_facet |
Yan-hong LI De-yang SHI Guang-hao LI Bin ZHAO Ji-wang ZHANG Peng LIU Baizhao REN Shu-ting DONG |
author_sort |
Yan-hong LI |
title |
Maize/peanut intercropping increases photosynthetic characteristics, 13C-photosynthate distribution, and grain yield of summer maize |
title_short |
Maize/peanut intercropping increases photosynthetic characteristics, 13C-photosynthate distribution, and grain yield of summer maize |
title_full |
Maize/peanut intercropping increases photosynthetic characteristics, 13C-photosynthate distribution, and grain yield of summer maize |
title_fullStr |
Maize/peanut intercropping increases photosynthetic characteristics, 13C-photosynthate distribution, and grain yield of summer maize |
title_full_unstemmed |
Maize/peanut intercropping increases photosynthetic characteristics, 13C-photosynthate distribution, and grain yield of summer maize |
title_sort |
maize/peanut intercropping increases photosynthetic characteristics, 13c-photosynthate distribution, and grain yield of summer maize |
publisher |
Elsevier |
series |
Journal of Integrative Agriculture |
issn |
2095-3119 |
publishDate |
2019-10-01 |
description |
Intercropping is used widely by smallholder farmers in developing countries to increase land productivity and profitability. We conducted a maize/peanut intercropping experiment in the 2015 and 2016 growing seasons in Shandong, China. Treatments included sole maize (SM), sole peanut (SP), and an intercrop consisting of four rows of maize and six rows of peanut (IM and IP). The results showed that the intercropping system had yield advantages based on the land equivalent ratio (LER) values of 1.15 and 1.16 in the two years, respectively. Averaged over the two years, the yield of maize in the intercropping was increased by 61.05% compared to that in SM, while the pod yield of peanut was decreased by 31.80% compared to SP. Maize was the superior competitor when intercropped with peanut, and its productivity dominated the yield of the intercropping system in our study. The increased yield was due to a higher kernel number per ear (KNE). Intercropping increased the light transmission ratio (LTR) of the ear layer in the maize canopy, the active photosynthetic duration (APD), and the harvest index (HI) compared to SM. In addition, intercropping promoted the ratio of dry matter accumulation after silking and the distribution of 13C-photosynthates to grain compared to SM. In conclusion, maize/peanut intercropping demonstrated the potential to improve the light condition of maize, achieving enhanced photosynthetic characteristics that improved female spike differentiation, reduced barrenness, and increased KNE. Moreover, dry matter accumulation and 13C-photosynthates distribution to grain of intercropped maize were improved, and a higher grain yield was ultimately obtained. |
topic |
maize intercropping peanut land equivalent ratio (LER) net photosynthetic rate (Pn) 13C-photosynthates distribution |
url |
http://www.sciencedirect.com/science/article/pii/S209531191962616X |
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