Factors limiting seed yield potential in F1 hybrids between natural and resynthesized Brassica napus

Yongguo ZHAO; Xing QIAO; Liu ZENG

首页> 外文期刊>中国油料作物学报（英文） >Factors limiting seed yield potential in F1 hybrids between natural and resynthesized Brassica napus

【24h】

Factors limiting seed yield potential in F1 hybrids between natural and resynthesized Brassica napus

机译：限制天然和重新合成的甘蓝型油菜F1杂种种子产量潜力的因素

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Resynthesized Brassica napus lines are of great potential in hybrid breeding for their higher genetic basis.An 8 × 8 complete diallel experiment was designed using 4 B.napus cultivars (BN) and 4 resynthesized rapeseed lines (RS) as parents,and all 56 F1 were divided into BN × BN,NR (RS × BN/BN × RS) and RS × RS types.Their heterosis for agronomic characteristics were investigated,especially on NR hybrids.Results showed that NR hybrids had higher plants,longer branches,more siliques and fewer seeds per silique at highly significant level when compared with conventional rapeseed cultivars.For yield per plant,all 32 NR cross combinations showed positive mid-parent heterosis and 25 ％ of the combinations (8 from 32 NRs) showed positive high-parental heterosis.On average of the 32 NRs,the heterosis was 30.56％ over mid-parents and-8.57％ over high-parents.Compared with BN × BN hybrids,NRs had more siliques per plant (437.0 vs 370.9) and fewer seeds per silique (11.6 vs 17.3).There was no significant difference on thousand seed weight between NR and BN × BN hybrids.NR hybrids showed abnormal flower organs,including A:59％ of NR combinations had more or less abnormal perianth or anthers;B:pollen fertility reduced,ranging from 56.2％ to 95.5％ and 80.7％ on average;C:poor silique-set (33.4％ on average) and seed set (7.8-+ 3.6 seeds per silique) after self -pollination;D:frequent univalents and muhivalents in metaphase I of meiosis;E:they showed highly significant self-incompatibility.

机译：重新合成的甘蓝型油菜品系具有较高的遗传基础，在杂交育种中具有巨大的潜力。以4个甘蓝型油菜（BN）品种和4个再合成的菜籽油品系（RS）为亲本，设计了8×8完整的二倍体试验，所有56个F1将其分为BN×BN，NR（RS×BN / BN×RS）和RS×RS类型。研究了其农艺特性的杂种优势，特别是在NR杂种上。结果表明，NR杂种具有较高的植株，更长的分支，更多的角果。与传统的油菜品种相比，每个角果的种子较少。在单株产量方面，全部32个NR杂交组合显示正中亲杂种优势，而25％的组合（32个NR中有8个）显示出正高亲本杂种优势。平均而言，在32个NR中，杂种优势在中亲中为30.56％，在高亲中为8.57％。与BN×BN杂种相比，NR的单株长角果数量更多（437.0 vs 370.9），单角种子数更少（ 11.6和17.3）。没有签名NR和BN×BN杂种的千粒重有明显差异。NR杂种表现出花器官异常，其中A：59％的NR组合花粉或花药或多或少; B：花粉育性降低，从56.2％到95.5。自花授粉后C：单亲定座（平均33.4％）和结实（每只长柄7.8- + 3.6种子）; D：减数分裂中期I的频繁单价和多价; E：他们表现出非常重要的自我不相容性。

著录项

来源
《中国油料作物学报（英文）》 |2016年第001期|31-37|共7页
作者
Yongguo ZHAO; Xing QIAO; Liu ZENG;
展开▼
作者单位

Oil Crop Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, No.2 Xudong 2nd Road, Wuhan 430062, P.R.China;

Oil Crop Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, No.2 Xudong 2nd Road, Wuhan 430062, P.R.China;

Oil Crop Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, No.2 Xudong 2nd Road, Wuhan 430062, P.R.China;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类
关键词

Factors limiting seed yield potential in F1 hybrids between natural and resynthesized Brassica napus

摘要

著录项

相关主题

期刊订阅