Finding of suitable planting date of TPS parents for hybrid seed production in northern areas of Pakistan.

摘要

Two years research was carried out to find out the suitable planting time for hybrid seed production in Gilgit. Four female TPS parents viz., Atzimba, LT-8, MF-I and MF-II and one male parent TPS-67 were planted in three planting dates. Number of inflorescence per plant and number of flowers per inflorescence were more in TPS lines Atzimba and LT-8 planted at first and second planting dates. Similarly, flower initiation was earlier in Atzimba and LT-8 at second planting date than the first and third planting date, whereas flowering initiation in MF-I, MF-II and TPS-67 was not affected by different planting dates. More number of berries per plant was produced by Atzimba and LT-8. MF-I and MF-II produced lower number of berries per plant. Atzimba and MF-II produced more number of seeds per berry at planting date first and second whereas, LT-8 produced maximum number of seeds at planting date first. Atzimba produced higher 1000-seed weight at second planting date whereas; remaining TPS parents produced higher number of 1000-seed weight at first planting date.