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The Structure of Tassel in Barren Stalk 1 (ba1) Mutant of Maize

The barren stalk 1 (ba1, 3L-94) mutant in maize (Zea mays L.) is characterized by a totally barren tassel inflorescent (Figure 1 and 2). The homozygous ba1 plant not only develops a male inflorescent totally barren from any branch and spikelet (Figure 2), but also develop no ear shoot (Figure 3). As a result, the plant is essentially male and female sterile. The stock is maintained through the heterozygous (ba1/+). We have initiated a study to elucidate the structure of the barren tassel inflorescent. This article reports the morphology of barren tassel stalk at the equivalent stage when wild type at mid silking.