1. Maize Seed carrying genotype 3 brown midrib (bm3) in homozygous state and powdery 2 (fl2) in homozygous sostoyanii.2. A maize plant, showing the phenotype of brown midrib and mealy endosperm of seeds obtained by cultivation under clause 1.3. Part of a corn plant according to claim 2, selected from the group consisting of an intact plant cell, plant protoplast, embryo, pollen, ovule, flowers, grains, seed, ear, cob, leaf, husk, stalk, root, the tip of the root, the root reference, the side branches of the panicle, anther, panicle, shell beans, escape and shelka.4. A maize plant according to claim 2, wherein the phenotype is manifested brown midrib due recessive genotype in homozygous sostoyanii.5 bm3. A maize plant according to claim 2, wherein the phenotype is manifested due mealy endosperm genotype homozygous recessive in sostoyanii.6 fl2. The seed of the inbred maize lines carrying genotype bm3 and fl2 in the homozygous state, or chast.7. Inbred maize plant carrying the genotype bm3 and fl2 in the homozygous state, obtained by the cultivation of seeds on item 6.8. Part of a corn plant according to claim 7, selected from the group consisting of an intact plant cell, plant protoplast, embryo, pollen, ovule, flowers, grains, seed, ear, cob, leaf, husk, stalk, root, the tip of the root, the root reference, the side branches of the panicle, anther, panicle, shell beans, escape and shelka.9. Seed corn inbred line designated 09SMA31BF, or portion thereof, where the seed sample deposited under line1. Семя кукурузы, несущее генотип коричневой центральной жилки 3 (bm3) в гомозиготном состоянии и мучнистости 2 (fl2) в гомозиготном состоянии.2. Растение кукурузы, демонстрирующее фенотип коричневой центральной жилки и мучнистого эндосперма, полученное посредством выращивания семян по п.1.3. Часть растения кукурузы по п.2, выбранная из группы, состоящей из интактной растительной клетки, протопласта растения, зародыша, пыльцы, семязачатка, цветка, зерна, семени, початка, коче