Soybean Breeding For Tolerant to Drought During Reproductive Stage

<span lang="EN">One of the strategies to increase soybean production </span><span lang="id">in Indonesia </span><span lang="EN">is maximizing the use of rainfed lowland or dry land using varieties </span><span lang="id">having characters of </span><span lang="EN">drought tolerant, high yielding, early maturing and resistant to biotic stress. The Ministry of Agriculture of the Republic of Indonesia has </span><span lang="id">releas</span><span lang="EN">ed </span><span lang="id">six </span><span lang="EN">soybean varieties tolerant </span><span lang="id">to </span><span lang="EN">drought during the reproductive stage</span><span lang="id">, namely </span><span lang="id"> </span><span lang="EN">Dering 1, Dering 2 and Dering 3 varieties </span><span lang="id">which </span><span lang="EN">are yellow seeds, while the Detam 2, Detam 3 and Detam 4 varieties are black seeds.</span><span lang="id">Among </span><span lang="EN">the</span><span lang="id">se six varieties</span><span lang="EN">, the Dering 1, Dering 2, Dering 3, and Detam 4 varieties show</span><span lang="id">ed</span><span lang="EN"> a tolerant response to drought, while Detam 2 and Detam 3 show</span><span lang="id">ed</span><span lang="EN"> a</span><span lang="id">n</span><span lang="EN"> intermediate tolerant response. Dering 2 variety show</span><span lang="id">ed</span><span lang="EN"> the highest seed yield potential of 3.32 tons/ha. Dering 1 and Dering 3 varieties show</span><span lang="id">ed</span><span lang="EN"> a</span><span lang="EN">resistant response to pod borer</span><span lang="id">. </span><span lang="EN">The</span><span lang="id">re was no</span><span lang="EN"> variet</span><span lang="id">y </span><span lang="EN">show</span><span lang="id">ed a</span><span lang="EN"> resistant response to pod </span><span lang="id">armyworm</span><span lang="EN"> pest. </span><span lang="EN">Dering 3 variet</span><span lang="id">y</span><span lang="EN"> show</span><span lang="id">ed</span><span lang="EN"> a resistant response to </span><span lang="id">both </span><span lang="EN">pod borer</span><span lang="id"> and pod sucking. </span><span lang="EN">For resistance to leaf rust, only Dering 1 show</span><span lang="id">ed</span><span lang="EN"> a resistant response. </span><span lang="EN">Dering </span><span lang="id">1</span><span lang="EN"> variet</span><span lang="id">y</span><span lang="EN"> show</span><span lang="id">ed</span><span lang="EN"> a resistant response to </span><span lang="id">both </span><span lang="EN">pod borer</span><span lang="id"> and leaf rust.</span><span lang="EN">Dering 1, Dering 2, Dering 3, and Detam 4 varieties </span><span lang="id">could be recommended to be planted</span><span lang="id"> in </span><span lang="EN">rainfed </span><span lang="EN"> </span><span lang="EN">lowland or dry land </span><span lang="id">areas </span><span lang="EN"> d</span><span lang="id">u</span><span lang="EN">r</span><span lang="id">in</span><span lang="EN">g</span><span lang="id"> dry season-2 where rainfall is limited.</span>