{"id":3626,"date":"2026-04-15T11:40:09","date_gmt":"2026-04-15T03:40:09","guid":{"rendered":"http:\/\/seminar.xtbg.ac.cn\/?p=3626"},"modified":"2026-04-15T11:40:11","modified_gmt":"2026-04-15T03:40:11","slug":"molecular-design-breeding-of-soybean-and-alfalfa","status":"publish","type":"post","link":"http:\/\/seminar.xtbg.ac.cn\/?p=3626","title":{"rendered":"Molecular Design Breeding of Soybean and Alfalfa"},"content":{"rendered":"\n<h2>Abstract:<\/h2>\n\n\n\n<p>Soybean is a primary source of plant protein and oil for humans and livestock. A strong negative correlation between grain yield and protein content severely limits the breeding of high\u2011yield and high\u2011protein soybean cultivars. Using QTL fine\u2011mapping, we identified LSB1 as a negative regulator of soybean branching and elucidated its molecular regulatory mechanism. <em>LSB1<\/em> mutation breaks the negative correlation between yield and protein content, allowing simultaneous enhancement of both traits. Introgression of the favorable <em>LSB1<\/em> allele into the elite variety Hefeng 55 significantly improved yield and protein content. High\u2011density planting induces shade\u2011avoidance syndrome and reduces branching. We identified a shade\u2011insensitive mutant <em>tms1<\/em> with increased branching and yield. Map\u2011based cloning revealed TMS1 as a negative regulator of soybean branching. Introduction of the favorable <em>TMS1<\/em> allele into Hefeng 55 significantly increased yield. These results offer valuable genes and genetic resources for breeding multi\u2011branched, high\u2011yield soybean cultivars adapted to dense planting. Alfalfa is a high\u2011quality forage known as the \u201cKing of Forages\u201d. China faces a severe alfalfa supply shortage with rapidly growing imports, while the lack of elite cultivars and inefficient breeding methods restrict variety improvement. We therefore developed molecular marker\u2011assisted breeding technologies for alfalfa.<\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n<p><strong>Speaker:<\/strong> Prof. Jingbo Jin<\/p>\n<p><strong>Affiliation: <\/strong>Institute of Botany, Chinese Academy of Sciences<\/p>\n<p><strong>Time: <\/strong>16:30\u201317:30, Tuesday, Apr. 14, 2026<\/p>\n<p><strong>Venue: <\/strong>Offline: Meeting Room 1-24, Southwest Biodiversity Laboratory<\/p>\n<p>Online: Tencent Meeting\u00a0 \u00a0ID: 412 789 011<\/p>\n<p>\u00a0<\/p>\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n\n<div class=\"wp-container-1 wp-block-group\"><div class=\"wp-block-group__inner-container\">\n<div style=\"height:0px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Speaker: Prof. Jingbo Jin<br \/>\nAffiliation: Institute of Botany, Chinese Academy of Sciences<br \/>\nTime: 16:30\u201317:30, Tuesday, Apr. 14, 2026<\/p>\n","protected":false},"author":2,"featured_media":3627,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[],"_links":{"self":[{"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/posts\/3626"}],"collection":[{"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3626"}],"version-history":[{"count":1,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/posts\/3626\/revisions"}],"predecessor-version":[{"id":3628,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/posts\/3626\/revisions\/3628"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/media\/3627"}],"wp:attachment":[{"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3626"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3626"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}