作物学报
作物學報
작물학보
ACTA AGRONOMICA SINICA
2015年
4期
557-564
,共8页
游光霞%孙果忠%张秀英%肖世和
遊光霞%孫果忠%張秀英%肖世和
유광하%손과충%장수영%초세화
小麦品种%抗寒性%抗逆性%VRN1基因
小麥品種%抗寒性%抗逆性%VRN1基因
소맥품충%항한성%항역성%VRN1기인
Wheat varieties%Cold hardiness%Stress resistance%VRN1 genes
冬季冻害是当前小麦生产面临的主要自然灾害之一。以我国黄淮海地区近年主栽的71个小麦品种为材料,通过对其抗寒性调查和VRN-A1、VRN-B1、VRN-D1位点基因型的分子标记鉴定,研究小麦抗寒性的生物学基础,探讨VRN1基因在小麦抗寒性中的作用。结果表明,小麦的抗寒性与其他抗逆性状相关联,生产和国家区域试验证实具有较好抗旱节水、耐盐碱等抗逆特性的品种多具有较强抗寒性。VRN1是小麦抗寒性的关键性遗传调控位点之一,显性基因VRN1的存在会显著降低品种的抗寒性,具有2个或3个VRN1基因的品种一般抗寒性都很弱,而3个位点均为隐性基因是品种具有强抗寒性的必备条件。因此,建议我国黄淮海北部地区应加强选育、推广基因型为vrn-A1vrn- B1vrn-D1的品种,以保证小麦安全生产。
鼕季凍害是噹前小麥生產麵臨的主要自然災害之一。以我國黃淮海地區近年主栽的71箇小麥品種為材料,通過對其抗寒性調查和VRN-A1、VRN-B1、VRN-D1位點基因型的分子標記鑒定,研究小麥抗寒性的生物學基礎,探討VRN1基因在小麥抗寒性中的作用。結果錶明,小麥的抗寒性與其他抗逆性狀相關聯,生產和國傢區域試驗證實具有較好抗旱節水、耐鹽堿等抗逆特性的品種多具有較彊抗寒性。VRN1是小麥抗寒性的關鍵性遺傳調控位點之一,顯性基因VRN1的存在會顯著降低品種的抗寒性,具有2箇或3箇VRN1基因的品種一般抗寒性都很弱,而3箇位點均為隱性基因是品種具有彊抗寒性的必備條件。因此,建議我國黃淮海北部地區應加彊選育、推廣基因型為vrn-A1vrn- B1vrn-D1的品種,以保證小麥安全生產。
동계동해시당전소맥생산면림적주요자연재해지일。이아국황회해지구근년주재적71개소맥품충위재료,통과대기항한성조사화VRN-A1、VRN-B1、VRN-D1위점기인형적분자표기감정,연구소맥항한성적생물학기출,탐토VRN1기인재소맥항한성중적작용。결과표명,소맥적항한성여기타항역성상상관련,생산화국가구역시험증실구유교호항한절수、내염감등항역특성적품충다구유교강항한성。VRN1시소맥항한성적관건성유전조공위점지일,현성기인VRN1적존재회현저강저품충적항한성,구유2개혹3개VRN1기인적품충일반항한성도흔약,이3개위점균위은성기인시품충구유강항한성적필비조건。인차,건의아국황회해북부지구응가강선육、추엄기인형위vrn-A1vrn- B1vrn-D1적품충,이보증소맥안전생산。
Winter freezing injury is one of the major natural disasters in wheat production. The effect ofVRN1genes on cold hardness was analyzed with phenotypic data and the allelic variations of VRN-A1,VRN-B1,VRN-D1in 71 wheat varieties grown in Yellow-Huai-Hai River Valley region. The results indicated that the cold hardiness of wheat was correlated with other stress toler-ances, and strong cold hardiness was found in most varieties showing good salinity tolerance, drought tolerance or water-saving fea-ture in production and the National Variety Regional Trial. VRN1 is a critical locus in the genetic network of wheat cold hardiness. The presence of the dominant geneVRN1was often accompanied with a significant decrease in cold hardiness, and weak cold hardi-ness was usually detected in the varieties with two or threeVRN1 genes. Coexistence of recessive genes vrn-A1,vrn-B1, andvrn-D1 was found to be an indispensable prerequisite for strong cold hardiness. Therefore, thevrn-A1vrn-B1vrn-D1 genotype is suggested in wheat production and variety improvement in the northern part of Yellow-Huai-Hai River Valley region of China.