PHENOLOGY, GROWTH AND YIELD ARE STRONGLY INFLUENCED BY HEAT STRESS IN LATE SOWN MUSTARD (BRASSICA SPP.) VARIETIES
Yükleniyor...
Dosyalar
Tarih
2020
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In rice-based cropping system of northern Bangladesh, mustard planting is delayed due to late harvest of monsoon rice
(Transplanted Aman rice; T. Aman rice). The late sown mustard is often exposed to high-temperature stress during the
reproductive stage, which causes a significant decrease in seed yield. Most of the farmers plant a low yielding local mustard
variety ‘Tori-7’, which is sensitive to high-temperature stress. The Oil Seeds Research Centre of Bangladesh Agricultural
Research Institute has recently released short duration and high-yielding mustard varieties for the rice-based cropping
system of northern Bangladesh to tackle this issue. However, the performance of these varieties in the target cropping
system under late sown conditions (together with exposure to heat stress) has not been evaluated yet. Therefore, this two year field experiment was conducted to assess the performance of newly released mustard varieties ‘BARI Sarisha-14’ and
‘BARI Sarisha-15’ in comparison with the local check variety ‘Tori-7’ sown at five planting dates (viz. October 21,
November 1, November 10, November 20, and November 30). The delay in sowing shortened time (days) to flowering and
maturity, regardless of the variety. Similarly, plant height, branches/plant and total dry matter accumulation of the tested
varieties were also reduced upon delay in planting. The greatest seed yield was observed in varieties ‘BARI Sarisha-15’ and
‘BARI Sarisha-14’ when sown on October 21. These two varieties produced fair seed yield when sown at November 20.
However, the local variety ‘Tori7’ yielded the least across all the planting dates. Therefore, the varieties ‘BARI Sarisha-14’
and ‘BARI Sarisha-15’ may be planted in the rice-based cropping system of northern Bangladesh after harvest of T. Aman
rice to get maximum seed yield
Açıklama
Anahtar Kelimeler
Sowing date, Phenology, Growth, Mustard, Varieties, High temperature, Late sowing, Seed yield
Kaynak
PAKISTAN JOURNAL OF BOTANY
WoS Q Değeri
Q3
Scopus Q Değeri
Cilt
52
Sayı
4
