CN1454463A - 具有隐性标记杂交水稻亲本及品种的选育方法 - Google Patents

具有隐性标记杂交水稻亲本及品种的选育方法 Download PDF

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CN1454463A
CN1454463A CN 03131697 CN03131697A CN1454463A CN 1454463 A CN1454463 A CN 1454463A CN 03131697 CN03131697 CN 03131697 CN 03131697 A CN03131697 A CN 03131697A CN 1454463 A CN1454463 A CN 1454463A
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hybrid rice
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rice
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CN1233220C (zh
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张从合
陈金节
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Anhui Win All Hi Tech Seed Co ltd
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QUANYIN AGRICULTURAL HIGH-TECH INST ANHUI
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Abstract

本发明涉及一种具有隐性标记杂交水稻的育种方法,引进、搜集并物理诱变稃色具有色彩标记的水稻品种资源,种植并人工杂交鉴定稃色遗传的特点后与杂交水稻亲本经杂交、回交转育、育性鉴定和测恢配组选出有隐性标记稃色的亲本,再进行选配组合、验证有效性,最终得具有隐性标记的杂交水稻亲本及品种。本发明实现了快速、简便、直观、准确鉴定杂交水稻种子的纯度,同时解决了机械化制种的难题,从而提高了制种产量,也降低了成本。

Description

具有隐性标记杂交水稻亲本及品种的选育方法
技术领域
本发明涉及一种具有隐性标记杂交水稻亲本及品种的选育方法。
背景技术
水稻在中国目前粮食生产中占有重要地位,它是粮食作物中分布范围最广,单产量、总产量最高的第一大粮食作物。而杂交水稻近年来在我国的推广面积占水稻种植面积的50%左右(1500hm2多)而其产量却占总产量的60%,每年增收粮食230亿公斤,杂交水稻的应用和开发为国民经济的建设和发展发挥了巨大作用。随着《种子法》的颁布和种子产业化的不断发展,我国杂交水稻种子产业越来越受到企业界的重视和参与,杂交水稻高产、优质新品种不断出现,但假种坑农事件也不断发生。假种一方面是制种过程中生物学混杂(如串粉),亲本自然混杂以及收获、加工、贮运过程中的机械性混杂引起的;另一方面是不法商贩为牟取暴利人为造假,侵犯知识产权引起的。这就迫切需要寻找一种直观、快捷而又有效地鉴定杂交水稻组合真实性、专有性和纯度的方法。否则不仅会扰乱种子市场,给种子企业、农民和国家造成重大的经济损失,同时也制约了杂交水稻的推广应用。
过去传统的鉴定方法是依据植株的形态特征和植物学分类来区分某一具体品种,但效果差,时常会出现某一亲本材料一公布,便被某一不法单位改名换姓重新应用,甚至出现同一杂交水稻组合被不同单位以不同品名审定的不良现象。过去传统的田间纯度鉴定方法是隔年鉴定或播种季节前借助温光或异地温暖地区(如海南)进行种植后方能断定;但如两系杂交水稻纯度鉴定因受光温影响常需要多期播种方能鉴定出组合纯度,耗时费力且准确度受到影响,并因鉴定时间迟,常会影响品种的销售。
利用水稻外观性状进行标记的方法已有公知,主要为利用水稻营养生长期内叶色的差异,如利用淡绿色叶片性状、利用紫色叶片性状、利用转绿型白化突变性状来标记母本等。但直至今日还没有利用隐性标记稃色相关性状,为杂交水稻种子的鉴定和保护提供一种直观、准确的方法。
发明内容
本发明的目的是提供具有隐性标记杂交水稻的选育方法,实现快速、简便、直观、准确鉴定杂交水稻种子的纯度。
本发明的具有隐性标记杂交水稻的选育方法,其特征在于包括以下步骤:
a、引进、搜集稃色具有色彩标记的水稻品种资源;
b、种植品种资源并人工杂交鉴定稃色遗传的特点,筛选出有色隐性稃色标记的品种资源,另外用物理诱变剂进行处理,诱发水稻品种进行变异,寻找隐性突变体;
c、将所选定的具有隐性稃色标记的水稻品种与杂交水稻的亲本经杂交、回交转育、育性鉴定和测恢配组,最终筛选出有隐性标记稃色的两系核不育系、恢复系、保持系;
d、对所育成的两系核不育系、恢复系、保持系进行选配组合,同时验证有效性,最终得具有隐性标记的杂交水稻亲本和品种。
上述方法采用的物理诱变剂为钴-60γ射线,剂量为:3.0~3.5万Rad。
选育杂交水稻的隐性标记稃色为褐色、浅褐色、紫黑色。
作为亲本选育类似的具隐性标记稃色杂交水稻。
本发明的效果:
1、本发明实现了快速、简便、直观、准确鉴定杂交水稻种子的纯度,有效地解决了其纯度鉴定时间滞后于种子销售行为的问题,也有力防止了假冒,保证了种子的质量。
2、利用父、母本稃色不一样混播机械化制种,再用色选机械将父本与杂交种子分开,解决了机械化制种的难题,从而提高了制种产量,也降低了成本。
具体实施方式
实施例1:
引进、搜集我国华南和长江流域特有的褐斑、原赭色、沟赤褐色、褐色、淡黄褐色、深赭褐色、黑褐色等稃色籼型水稻品种资源213份,引进爪哇稻有标记稃色的水稻资源75份,用钴-60γ射线3.2万Rad诱变选育的标记稃色的水稻材料55份,共计343份,进行统一编号整理,再利用稃色为杆黄色的两系核不育系广占63-4S为母本进行人工组配得F1杂交种子343份。种植F1,并检查F1的植株上所结F2稻谷,其中为杆黄色的一份。再用此F2花粉回交编号为M95,稃色为褐色爪哇稻的对应材料,得回交F1。种植F2种子和回交F1查群体内褐色植株与杆黄色植株分离比例,然后进行统计分析;并用此M95同目前生产上使用的明恢63、江恢151、扬稻6号等多数品种杂交,其F1稃色均不表现褐色;可知此M95爪哇稻的褐色稃色为受一对隐性基因控制,因而寻得具有隐性标记稃色的爪哇型水稻品种M95材料一份。如上述大量种植广占63-4S与M95材料杂交的F2 3000棵以上,选择群体内分离出的稃色为褐色的不育系稳定的不育株9株,对此9株进行短日低温处理,促其自交结实,此自交种海南加代繁殖得F3,按此办法循环进行至F6,便可稳定获得稃色为褐色标记的新安S,其选育图为:
广占63-4S(稃色杆黄色)×M95(稃色褐色)
                     ↓
                      F1稃色杆黄色
                     ↓
                      F2(群体内寻找稃色为褐色的不育株)
                     ↓(多代选择株型优良、育性稳定的不育株)
                      F6稃色具有隐性标记的新安S
实施例2:
用钴-60γ射线3.2万Rad照射处理具有紫黑色显性的M032干种子100克,在它的M2世代选择稃色与M032有所不同的植株103株,并标牌定株,同广占63-4S进行测配,选择稃色为有色隐性的变异株7株。用该7株材料与杂交水稻恢复系293杂交、回交、多代选择得稃色具有隐性标记的恢复系M293。

Claims (4)

1、具有隐性标记杂交水稻亲本及品种的选育方法,其特征在于包括以下步骤:
a、引进、搜集稃色具有色彩标记的水稻品种资源;
b、种植品种资源并人工杂交鉴定稃色遗传的特点,筛选出有色隐性稃色标记的品种资源,另外用物理诱变剂进行处理,诱发水稻品种进行变异,寻找隐性突变体;
c、将所选定的具有隐性稃色标记的水稻品种与杂交水稻的亲本经杂交、回交转育、育性鉴定和测恢配组,最终筛选出有隐性标记稃色的两系核不育系、恢复系、保持系;
d、对所育成的两系核不育系、恢复系、保持系进行选配组合,同时验证有效性,最终得具有隐性标记的杂交水稻亲本和品种。
2、根据权利要求1所述的具有隐性标记杂交水稻的选育方法,其特征在于物理诱变剂为钴-60γ射线,剂量为:3.0~3.5万Rad。
3、根据权利要求1所述的具有隐性标记杂交水稻的选育方法,其特征在于选育杂交水稻的隐性标记稃色为褐色、浅褐色、紫黑色。
4、根据权利要求1所述的具有隐性标记杂交水稻的选育方法,其特征在于作为亲本选育类似的具隐性标记稃色杂交水稻。
CN 03131697 2003-06-04 2003-06-04 具有隐性标记杂交水稻亲本及品种的选育方法 Expired - Lifetime CN1233220C (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105325285A (zh) * 2015-11-04 2016-02-17 文山壮族苗族自治州农业科学院 选育具有隐性双色颖壳标记水稻的方法
CN105706911A (zh) * 2016-02-19 2016-06-29 四川省农业科学院生物技术核技术研究所 一种基于不育系花香a的三系杂交水稻轻简易制种方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105325285A (zh) * 2015-11-04 2016-02-17 文山壮族苗族自治州农业科学院 选育具有隐性双色颖壳标记水稻的方法
CN105706911A (zh) * 2016-02-19 2016-06-29 四川省农业科学院生物技术核技术研究所 一种基于不育系花香a的三系杂交水稻轻简易制种方法

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