1.3 main contents of plant breeding育种目标的制订及实现目标的相应策略种质资源的搜集，保存，研究评价，利用及创新选择的理论与方法，人工创造变异的途径，方法及技术杂种优势利用的途径与方法目标性状的遗传、鉴定及选育方法作物育种各阶段的田间试验技术新品种的审定、推广和种子繁育等
1.3 main contents of plant breeding ⚫ 育种目标的制订及实现目标的相应策略 ⚫ 种质资源的搜集,保存,研究评价,利用及创新 ⚫ 选择的理论与方法，人工创造变异的途径,方 法及技术 ⚫ 杂种优势利用的途径与方法 ⚫ 目标性状的遗传、鉴定及选育方法 ⚫ 作物育种各阶段的田间试验技术 ⚫ 新品种的审定、推广和种子繁育等
1.4植物育种的意义到2030年，我国粮食单产要求比现在（290公斤/亩）提高45%~50%。要求全国主要农作物品种更换4~5次。提高作物产量的诸项农业技术措施（如品种，肥料，灌溉，栽培技术等)中，良种的贡献占30%--60%。我国前只占30%左右。从作物生产成本上看，种子的成本投入只占5-10%左右
1.4 植物育种的意义 ⚫ 到2030年，我国粮食单产要求比现在 （290公斤/亩）提高45%～50%。要求 全国主要农作物品种更换4～5次。 ⚫ 提高作物产量的诸项农业技术措施(如品 种，肥料，灌溉，栽培技术等)中，良种 的贡献占30% - 60%。我国目前只占 30%左右。从作物生产成本上看，种子的 成本投入只占5-10%左右
1.4植物育种的意义选育和推广农作物良种是从根本上改善农产品品质的有效途径成绩：“双低”油菜，高油玉米问题：南方早，优质小麦选育和推广农作物良种还是增强作物抗病虫能力和抗逆性、减少产量损失，并进一步提高对养分资源利用效率的有效途径。每年因病虫草鼠害造成的产量损失达10%以上(棉铃虫，玉米病毒病，小麦纹枯病等)旱、涝、盐碱地占全国耕地面积的一半以上我国磷肥钾肥资源十分短缺
1.4 植物育种的意义 ⚫ 选育和推广农作物良种是从根本上改善农产品 品质的有效途径。 成绩：“双低”油菜，高油玉米， 问题：南方早籼，优质小麦 ⚫ 选育和推广农作物良种还是增强作物抗病虫能 力和抗逆性、减少产量损失，并进一步提高对 养分资源利用效率的有效途径。 ⚫ 每年因病虫草鼠害造成的产量损失达10%以上 (棉铃虫，玉米病毒病，小麦纹枯病等)旱、涝、 盐碱地占全国耕地面积的一半以上我国磷肥、 钾肥资源十分短缺
1.4植物育种的意义育种材料和方法上的创新及应用能够带动育种水平上的突破“矮孟牛”，1B/1R小麦亲本，水稻“野败”不育系，玉米Mo17自交系杂种优势利用－20世纪农业上的“曼哈顿工程”造就现代种子企业的核心关键技术PioneerHi-BredInternational隆平高科登海种业
1.4 植物育种的意义 ⚫ 育种材料和方法上的创新及应用能够带 动育种水平上的突破。 “矮孟牛” ，1B/1R小麦亲本，水稻 “野败”不育系，玉米Mo17自交系 杂种优势利用－20世纪农业上的 “曼哈顿工程” ⚫ 造就现代种子企业的核心关键技术 Pioneer Hi-Bred International 隆平高科 登海种业
PIONEER田A DUPONTCOMPANYInMay 1926,Henry A.Wallace and eightassociates created the Hi-Bred Corn Company -the first company to develop, produce and sellhybrid corn.Henry A. Wallace's agrarian roots ran deep. His grandfather,Henry Wallace, was an influential farm practices spokespersonknown as"Uncle Henry"to Midwestern farmers. And his father,Henry C. Wallace, was co-founder of Wallaces' Farmer, a leadingagricultural magazineDrawing upon these earlyinfluences, Henry A. Wallace soonHenryWallacediscovered his own agricultural niche. He became interested inplant breeding after numerous visits with a botanist at lowaState University -a botanist by the name of George WashingtonCarver. Wallace's idea was that a hybrid corn could producehealthier, more durable, and higher yielding stock thantraditionalvarieties.In 1933 Roosevelt appointed Wallace as his Secretary ofAgriculture,SecretaryofCommerce after the war。 In 1940Roosevelt picked Wallace as his vice president
Henry Wallace In May 1926, Henry A. Wallace and eight associates created the Hi-Bred Corn Company — the first company to develop, produce and sell hybrid corn. Henry A. Wallace’s agrarian roots ran deep. His grandfather, Henry Wallace, was an influential farm practices spokesperson known as "Uncle Henry" to Midwestern farmers. And his father, Henry C. Wallace, was co-founder of Wallaces’ Farmer, a leading agricultural magazine. Drawing upon these early influences, Henry A. Wallace soon discovered his own agricultural niche. He became interested in plant breeding after numerous visits with a botanist at Iowa State University – a botanist by the name of George Washington Carver. Wallace’s idea was that a hybrid corn could produce healthier, more durable, and higher yielding stock than traditional varieties. In 1933 Roosevelt appointed Wallace as his Secretary of Agriculture ， Secretary of Commerce after the war 。 In 1940 Roosevelt picked Wallace as his vice president