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Hybrid seed production techniques using male sterile and fertile inbred lines of pearl millet pennisetum americanum l. leeke

Hybrid seed production techniques using male sterile and fertile inbred lines of pearl millet pennisetum americanum l. leeke

Research Reports of the Rural Development Administration 32(1 UPLAND IND. CROPS): 46-51

Pearl millet has been detected as a promising new forage crop of excellent quality and higher green fodder yield in South Korea since 1985. The study was to develop the efficient hybrid seed production techniques for higher grain yield per unit area of the newly developed hybrids Suwon 1, Suwon 6 and Suwon 18. The highest seed production planting pattern was one row of pollen parent T186 to ten rows of seed parent T23DA for Suwon 1 hybrid, which was the same in hybrid seed yield as compared with two rows of pollen parent to twenty rows of seed parent, where the seed parent must be planted on May 15 being one month later than pollen parent's planting date for nicking their flowering and pollen shedding periods. The mean hybrid seed yields were 128kg/10a and 115kg/10a when planted on May 15 and May 25, 1989 respectively. When pollen parent T186 of Suwon 1, Suwon b and Suwon 18 hybrids was planted on May 5, 1989, its pollen began to shed from August 14 reaching 50% pollen shedding on August 17. When planted on May 10 to 15, its pollen shed on August 16 to 17 reaching 50% pollen shedding on August 20 to 21. When planted on May 25, its pollen shedding reached to 50% on August 28, 1989. Thus, the seed parent T23DA of Suwon 1 should be planted on May 23 to 24 for mating with pollen parent T186 planted on May 5 to 10, 1989. The seed parents ICM81A for Suwon 6 and T85DA for Suwon 18 should be planted early June, and on May 10 to 15 respectively for nicking their flowering and pollen shedding periods to proeduce the highest hybrid seed yields in Suwon.

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