Optimal yield-related attributes of irrigated rice for high yield potential based on path analysis and stability analysis
Improvement of yield in rice (Oryza sativa L.) is vital for ensuring food security in China. Both rice breeders and growers need an improved understanding of the relationship between yield and yield-related traits. New indica cultivars (53 in 2007 and 48 in 2008) were grown in Taoyuan, Yunnan provin...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2014-08-01
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| Series: | Crop Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214514114000312 |
| _version_ | 1818917400025759744 |
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| author | Ganghua Li Jun Zhang Congdang Yang Yunpan Song Chengyan Zheng Shaohua Wang Zhenghui Liu Yanfeng Ding |
| author_facet | Ganghua Li Jun Zhang Congdang Yang Yunpan Song Chengyan Zheng Shaohua Wang Zhenghui Liu Yanfeng Ding |
| author_sort | Ganghua Li |
| collection | DOAJ |
| description | Improvement of yield in rice (Oryza sativa L.) is vital for ensuring food security in China. Both rice breeders and growers need an improved understanding of the relationship between yield and yield-related traits. New indica cultivars (53 in 2007 and 48 in 2008) were grown in Taoyuan, Yunnan province, to identify important components contributing to yield. Additionally, two standard indica rice cultivars with similar yield potentials, II You 107 (a large-panicle type) and Xieyou 107 (a heavy-panicle type), were planted in Taoyuan, Yunnan province and Nanjing, Jiangsu province, from 2006 to 2008 to evaluate the stability of yield and yield-related attributes. Growth duration (GD), leaf area index (LAI), panicles per m2 (PN), and spikelets per m2 (SM) were significantly and positively correlated with grain yield (GY) over all years. Sequential path analysis identified PN and panicle weight (PW) as important first-order traits that influenced grain yield. All direct effects were significant, as indicated by bootstrap analysis. Yield potential varied greatly across locations but not across years. Plant height (PH), days from heading to maturity (HM), and grain weight (GW) were stable traits that showed little variation across sites or years, whereas GD (mainly the pre-heading period, PHP) and PN varied significantly across locations. To achieve a yield of 15 t ha− 1, a cultivar should have a PH of 110–125 cm, a long GD with HM of approximately 40 days, a PN of 300–400 m− 2, and a GW of 29–31 mg. |
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| language | English |
| last_indexed | 2024-12-20T00:33:28Z |
| publishDate | 2014-08-01 |
| publisher | KeAi Communications Co., Ltd. |
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| series | Crop Journal |
| spelling | doaj.art-408598b9cede403e981597db62f6ff4e2022-12-21T19:59:52ZengKeAi Communications Co., Ltd.Crop Journal2095-54212214-51412014-08-0124235243doi:10.1016/j.cj.2014.03.006Optimal yield-related attributes of irrigated rice for high yield potential based on path analysis and stability analysisGanghua Li0Jun Zhang1Congdang Yang2Yunpan Song3Chengyan Zheng4Shaohua Wang5Zhenghui Liu6Yanfeng Ding7Jiangsu Key Laboratory for Information Agriculture, National Engineering and Technology Center for Information/Agriculture, Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, ChinaJiangsu Key Laboratory for Information Agriculture, National Engineering and Technology Center for Information/Agriculture, Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, ChinaJiangsu Key Laboratory for Information Agriculture, National Engineering and Technology Center for Information/Agriculture, Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, China; Institute of Food Crop of Yunnan Academy of Agricultural Sciences, Kunming 650205, ChinaJiangsu Key Laboratory for Information Agriculture, National Engineering and Technology Center for Information/Agriculture, Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, ChinaInstitute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaJiangsu Key Laboratory for Information Agriculture, National Engineering and Technology Center for Information/Agriculture, Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, ChinaJiangsu Key Laboratory for Information Agriculture, National Engineering and Technology Center for Information/Agriculture, Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, ChinaJiangsu Key Laboratory for Information Agriculture, National Engineering and Technology Center for Information/Agriculture, Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, ChinaImprovement of yield in rice (Oryza sativa L.) is vital for ensuring food security in China. Both rice breeders and growers need an improved understanding of the relationship between yield and yield-related traits. New indica cultivars (53 in 2007 and 48 in 2008) were grown in Taoyuan, Yunnan province, to identify important components contributing to yield. Additionally, two standard indica rice cultivars with similar yield potentials, II You 107 (a large-panicle type) and Xieyou 107 (a heavy-panicle type), were planted in Taoyuan, Yunnan province and Nanjing, Jiangsu province, from 2006 to 2008 to evaluate the stability of yield and yield-related attributes. Growth duration (GD), leaf area index (LAI), panicles per m2 (PN), and spikelets per m2 (SM) were significantly and positively correlated with grain yield (GY) over all years. Sequential path analysis identified PN and panicle weight (PW) as important first-order traits that influenced grain yield. All direct effects were significant, as indicated by bootstrap analysis. Yield potential varied greatly across locations but not across years. Plant height (PH), days from heading to maturity (HM), and grain weight (GW) were stable traits that showed little variation across sites or years, whereas GD (mainly the pre-heading period, PHP) and PN varied significantly across locations. To achieve a yield of 15 t ha− 1, a cultivar should have a PH of 110–125 cm, a long GD with HM of approximately 40 days, a PN of 300–400 m− 2, and a GW of 29–31 mg.http://www.sciencedirect.com/science/article/pii/S2214514114000312Irrigated riceGrain yieldYield-related attributesSequential path analysisStability analysis |
| spellingShingle | Ganghua Li Jun Zhang Congdang Yang Yunpan Song Chengyan Zheng Shaohua Wang Zhenghui Liu Yanfeng Ding Optimal yield-related attributes of irrigated rice for high yield potential based on path analysis and stability analysis Crop Journal Irrigated rice Grain yield Yield-related attributes Sequential path analysis Stability analysis |
| title | Optimal yield-related attributes of irrigated rice for high yield potential based on path analysis and stability analysis |
| title_full | Optimal yield-related attributes of irrigated rice for high yield potential based on path analysis and stability analysis |
| title_fullStr | Optimal yield-related attributes of irrigated rice for high yield potential based on path analysis and stability analysis |
| title_full_unstemmed | Optimal yield-related attributes of irrigated rice for high yield potential based on path analysis and stability analysis |
| title_short | Optimal yield-related attributes of irrigated rice for high yield potential based on path analysis and stability analysis |
| title_sort | optimal yield related attributes of irrigated rice for high yield potential based on path analysis and stability analysis |
| topic | Irrigated rice Grain yield Yield-related attributes Sequential path analysis Stability analysis |
| url | http://www.sciencedirect.com/science/article/pii/S2214514114000312 |
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