Analysis of dry matter accumulation and yield traits for super high-yielding soybean Jiyu 86 in Xinjiang

ZHAO Jing, ZHANG Heng-bin, ZENG Kai, LUO Geng-tong, ZHAN Yong*

CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2018, Vol. 40 ›› Issue (3) : 367.

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CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2018, Vol. 40 ›› Issue (3) : 367. DOI: 10.7505/j.issn.1007-9084.2018.03.008

 Analysis of dry matter accumulation and yield traits for super high-yielding soybean Jiyu 86 in Xinjiang

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Abstract

In this study, Ji-yu 86, a soybean variety introduced in the early stage and super high-yielding in Xinjiang, was selected for this research, and Xin-dadou 23 with high yield potential in local area as control. The growth period, agronomic traits, leaf area index, net assimilation amount, leaf productivity and yield components were compared in order to elucidate the dry matter accumulation and yield traits of Jiyu 86 for the super high yield in Xinjiang, and to further provide theoretical basis for the high yield of Jiyu 86, and to assist in breeding super high yield cultivars. The results showed that after the first flowering stage, the root biomass of Ji-yu 86 was significantly higher than that of Xindadou 23, and flower pods biomass of Jiyu 86 was also relatively higher than that of Xindadou 23 in the whole growth period. Moreover, the pod dry weight of Ji-yu 86 was 16.7% higher than that of Xindadou 23 at maturity stage. Leaf area index and net assimilation of both cultivars were peaked at drumming stage, at which time the leaf area index of Xindadou 23 was 80% higher than that of Ji-yu 86. After drumming stage, net assimilation and leaf productivity of Jiyu 86 were significantly (P <0.05) higher than that of Xindadou 23. Jiyu 86 has relatively compact plant structure, suitable plant height, stem nodes number, less branches and significant population heterosis. In addition, single seed weight, 100-seed weight, harvested plant number of Jiyu 86 were significantly (P <0.05) higher than those of Xindadou 23. In general, the plant structure of Ji-yu 86 was reasonable with obvious population advantages, suitable leaf area index and high utilization rate of photosynthetic products, which could assist the transfer of dry matter accumulation from vegetative organs to grain and achieve a super high yield.

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Xindadou 23 / Jiyu 86 / super high yield / dry matter accumulation / leaf area index

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ZHAO Jing, ZHANG Heng-bin, ZENG Kai, LUO Geng-tong, ZHAN Yong* .  Analysis of dry matter accumulation and yield traits for super high-yielding soybean Jiyu 86 in Xinjiang[J]. CHINESE JOURNAL OF OIL CROP SCIENCES, 2018, 40(3): 367 https://doi.org/10.7505/j.issn.1007-9084.2018.03.008

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